I was about 12 years old and started to develop an interest to the other gender. At that time it was customary to join a working group or sports team in the afternoons. I joined Volleyball. One day in winter I cam back home, and realized that I had left my scarf behind in the sports hall.
My mother insisted that I would go back to retrieve it the next morning before my first class. That was pretty inconvenient, in that on a Friday I didn't have classes the first two hours, so I would need to get up early especially for this. But what could I do? I arrived at the sports hall 15 minutes before the first gym class. The janitor was already present and let me in, after which he quickly returned to his own job. The scarf was found quickly, since it was still on the hook where I had left it. On my way out I passed the girls dressing room. I wondered what it would like inside. Apart from me and the janitor, who was minding his own business, no one was around yet. For safety I still knocked on the door, before opening it.
Well, what should I expect? It was no different than the boy's room. A large open area only filled with benches, clothes hooks, a broom cupboard, a shower area and toilets. OK, in the bathrooms the urinals were missing. Nothing that exciting. I sat down on one of the benches, and tried to imagine how a girl would change in here.
Suddenly I heard girls chattering from the hallway. Ouch, blast it, when they find me here... My first idea was the windows, but they were high and only tilting. I wouldn't be able to get out through there quickly. Now they were at the door. The broom cupboard was actually more like a niche with a curtain. I dove behind it and prayed that no one would hear my pounding heart.
The room quickly filled, and I tried to determine from the voices which class this could be. A girl called "How I hate these things, I hope we're soon back to doing athletics." "Why is that", another asked, "these leotards show your curves beautifully." Leotard, I thought, this class has gymnastics. I knew there were several girls in my class who also disliked wearing these things. They felt mostly naked and feared being stared at. And they weren't that wrong ;-) But the gymnastic teachers insisted on them with gymnastics. Because of the danger that loose clothing could snag on something, these needed to be skintight, and apart from that they could better judge and correct the movements this way.
Now I became curious. Leotards had always sparked an interest in me, and I wanted to learn how the girls got into them and what they wore underneath. I tried to peek through a gap in the curtains. Then a girl laughed "I don't have to join today, my period has just started." I startled; I knew that voice - it belonged to my sister Kerstin. Kerstin was two years older than me and always tried to get the better of me. Even this morning during breakfast she had grinned at me. She knew why I needed to get up early. Instinctively I took a step back, right on one of the brooms. The broom hit a bucket that fell over with a crash. Could it be any worse?
The curtain was pulled aside. "What do we have here?" A few girls that were already undressed quickly grabbed a few things and kept them in front of them. "Kerstin, isn't that your younger brother?" "What are you doing here?" "Finding my scarf..." I stuttered while turning red. "Well, you seem to have found it!" "What are we going to do with him? We need to punish him somehow!" Kerstin came toward me "first things first, he shouldn't be peeping around here." She grabbed my scarf and tied it in front of my eyes. "Some more scarves and we'll tie him good." I tried to resist, but around that age fifteen girls, and two years older than me, were way stronger. They tied me standing up to a clothing rail. The hands were tied to the rail behind my back, a scarf around my waist and one around my knees. I writhed around. "If you don't hold still, we'll also gag you and put you under a cold shower." That I could do without, so I kept quiet. "First we'll change clothes. Can't he really see anything?" The scarf was sufficient. I had to stand there and could only image what happened a few feet away from me. The girls were undressing to their underwear and stepped into their leotards, drew it up to the chest and pushed the arms in. Too bad I really couldn't see anything. The girls whispered; I couldn't really understand - something about a sausage. "Someone should look if Miller is already in the hall!" Oh my god, they had gym from Miller. She had been a substitute teacher with us once. Not very keen on men or boys!
"The coast is clear", and off we went. I was untied; only my own scarf stayed in place. Two strong girls held me under the arms and dragged me into the sports hall. "Unroll the mats." What were they planning? "Down with you." Now the scarf shifted and I could see again. The girls had unrolled a large gymnastics mat of 2 cm thick and 3 by 5 meters wide, and put me down on one side. Before I knew what was happening, many hands rolled me into the mat, turn after turn. I couldn't move anymore. Then they shoved me into a corner. Kerstin bent over "do you get enough air? Afterward we'll get you out, you'll have served your time and none the wiser." What could I do? I agreed.
Now Miller entered and lined up the girls. I heard her shrill voice and her blow whistle. I tried to move slightly to prevent cutting off the circulation in my arms, but that must have stirred up some dust from the old mat. I had to sneeze loudly and once more and then again. That earned me the full attention from ms. Miller. "Please unroll this thing here." The girls rolled me loose with a big tug and soon I laid dizzily at ms. Millers feet. She was brought up-to-date about how I got into that situation. "Aha, a little peeping Tom. Don't you have classes at the moment?" "No, I have the first two hours off." "Well, if you have nothing better to do and are here anyhow, you'd better join in. For the gymnastics practice we're missing one person from your sister's group anyway." How could I get out of this? On one hand it would interesting to do gym with the girls, but now I just wanted to get out of here as soon as possible. "I don't have my gym clothes with me; I'll just get out of here then."
But there I miscalculated. "Stop right there. You are going to join us for punishment. Kerstin, do you have your gym kit with you, so your brother can borrow it?" "Yes, they should fit him; follow me and I'll give them to you." I hated her: how could she do that to me, but I followed her docile to the girls dressing room. "Hey Kerstin, do I really have to?" "Be glad that I'm here; the last time someone was caught in here, Ms. Miller required him to join the class naked. You shouldn't have sneezed; then everything would have worked out fine. I also have a reputation at stake here; I couldn't allow to have my little brother peep at my friends. So now off with your clothes." I undressed to my undies. I wore green boxer shorts and a white undershirt. "Look here Kerstin, I could just join dressed like this." "Normally that would do, but currently we have gymnastics, and you'll need this." She held up her leotard. It was bright blue, with three quarter arms and a round neck. "Oh man, I'm supposed to wear that?" "Yes, what else, and hurry; ms. Miller gets impatient quickly. You need to get those boxer shorts off too, or they would stick out at the bottom. I'll turn around." Kerstin handed me her leotard and turned the other way. The outfit looked so small. I felt the elastic material between my fingers. It was very stretching; Kerstin was just as big as I was. Nothing for it - I undressed up to my socks and stepped in it. Which way in front? Oh, the label should be in the back. I pulled the outfit up to my chest; it stretched and stuck closely to my body. The bottom part was already up to my crotch, and there a bulge formed. The outfit was of course not cut for male parts, but since it stretched... So, now how do I get my arms in? Kerstin became impatient and turned toward me. "What is taking you so long? You need to put your arms in one at the time. You really hadn't seen anything before, then. I'll give you a hand." The neck opening really stretched far enough so that I got first one and then the other arm into the suit. It popped over the second shoulder and I was in. I moved my hands over my body. "It's fitting rather well" I concluded. "You can wear it whenever you like for all I care." Kerstin grinned. "Now the shoes and you're off."
I entered the hall bright red, and the girls giggled. Ms. Miller didn't allow for a break though. "You, get into line and join the warming up." I got assigned a place in the circle. We repeatedly wnet through the same exercise: knee bend, hip roll or something, and then run around the circle once. The leotard bunched up in the crotch every time. I kept on fumbling to get it straightened out again. But I noticed that the same happened to the other girls, except for Sonja. She had an outfit with short legs that seemed to work better.
Because I was pretty athletic at the time, it wasn't hard to keep up with the older girls. Then we went on to the gymnastics areas. Gymnastics on the floor was weird. Forward and backward rolls I could do, but the graceful movements the girls used with them only looked ridiculous when I did them. The girls could hardly suppress laughing. Only ms. Miller was unaffected and acted professionally.
Vaulting was easy. I had enough bravery and strength. I cleared the vault horse in crouch or spread without needing any support. That earned me the recognition of several of the girls. Susanne confided in me that she always was a bit scared. Gradually the girls in my group accepted me and I felt more and more comfortable. I'd gotten used to the leotard. The balance beam was quite new to me though. Such a narrow strip. Walking across wasn't that bad, but jumping up, spread the legs, and then land on it again was something else. I was scared, but the girls cheered me on and finally I gathered my courage, took the leap, and made it. That earned me the applause from all of them. At the uneven bars ms. Miller observed for a moment and declared that I should skip some of the exercises due to my special anatomy.
Then there was the acrobatics. We were divided into groups of three, and that worked because of my presence. Each time two were doing the exercise while the third assisted. I was in a group with Susanne and Sonja. A few of the exercises I still remember. One student lay on her back with bent knees, and the other did a handstand on the first one's outstretched arms. And the thigh stand: both grabbed hands and leaned back, and one tried to stand on the thighs of the other. We agreed that I should either be the bottom one or the one assisting. Sonja weighed least so she was always on top. Once Sonja slipped off Susanne and I caught her. I happened to touch one breast while we both ended up on the floor. I stammered an apology, but she said it was OK. Did I damage something there? It seemed to me that her nipple was more clearly visible through her leotard now. She noticed how I stared at her breasts. During the next exercise she 'accidentally' brushed my crotch. Immediately the bulge grew larger. Now she was the one staring, and she whispered "same principle". Aha, how educating such a gym class could be. I tried to think of something else as quickly as I could.
At the end of the lesson we ran two more rounds around the hall. During the discharge, ms. Miller invited me to join the lessons from now on, and I thanked her but declined since I preferred sleeping longer. Actually I had really enjoyed myself, but I suspected the offer wasn't totally serious.
Then it was off to the dressing room. At the door Kerstin stepped in my way: "You really participated nicely, but changing you need to do outside of here." Well yes, of course, stupid of me to expect just to march right into the girls dressing room, only because I was wearing a leotard. "Then get me my clothes back." Kerstin disappeared briefly and then came back with my stuff. I had already gotten my arms out of the suit, when I noticed that my underwear was missing. "Kerstin, my underwear is not there." "Oh well, you look so sweet in the leotard, just keep it on and throw over a sweater and pants." I protested "I want my underwear back!" Kerstin retrieved a plastic bag with my underwear, which was soaking wet. "I wanted to be a good sister and washed your undies." she grinned. "Just keep on wearing the leotard; it's not like this has been so severe a punishment until now. No one will learn about it." There was no other option for me than to pull on my sweater and pants over the leotard. I grabbed my bag and got ready for my first normal class of the day. In time I forgot all about my special underwear, and adjusted the bottom every now and then automatically. Especially fun was when I needed to go for a pee just before lunch. Like always I took position in front of a urinal, opened my fly, and suddenly realized that it wouldn't work that way. My classmate Heiko stood next to me and teased: "Is it so small that you can't find it?" I mumbled something about a BM and entered a stall. Because the others were still around I needed to keep up appearances and sat down. It was rather inconvenient to remove jacket and sweater and sitting next to naked on the toilet.
Back home Kerstin awaited me. Susanne, her classmate, was also there. She asked "are you really still wearing that leotard?" I lifted my sweater. "You see, I won" exclaimed Kerstin, " now you must watch that horror movie and give me the bottle of wine." I considered that my parents were off for a family visit and would only be back tomorrow. Susanne wanted to stay the night and both had planned a movie night to celebrate the start of a holiday period. Susanne was frightened of the horror movie though, while Kerstin loved it. "Because I helped you win the bet, I want to watch the movie too." I proposed. Kerstin negotiated "Then you are going to get bread from the bakery tomorrow morning." "OK" "And you'll wear the leotard until breakfast, apart from at the toilet." "Oh well, OK" "And inside without anything over it." "Is that all?" "Yes, my dear brother." "OK" "Wow, you really must be wanting to watch that movie."
I removed sweater and pants and started on my school work. Later I strolled about with my friends for a while. In the evening the three of us sat in front of the TV and watched the horror movie. Somewhere during the movie Susanne grabbed my hand and squeezed it during the scariest scenes. I found that all but unpleasant. Then the movie was over and it was time for bed. I lay there thinking about the past day and felt weird. While thinking about the gym class I rubbed myself over the smooth suit lower and lower. The smooth material intensified the feelings. Suddenly it became moist. I startled. Did I just wet the bed or was this something else? I remembered the educational pamphlet that my parents gave me and started reading. I soon realized that I had my first conscious orgasm. Now I had soiled Kerstin's leotard. But whatever, it was her idea in the first place. I went to the bathroom, rinsed the stain and dried it with a hairdryer.
Next morning I was off to the bakery, made breakfast and waited in the leotard for both sleeping beauties. Susanne had barely slept and talked about nightmares about storms and water. Kerstin noticed the well laid-out breakfast table and told me "OK, you can take a shower and change. The leotard you can put in the laundry basket." I enjoyed the hot shower and followed her orders to the letter: first shower, then change. The water dribbled down the shiny material of the leotard and it clinged even tighter to my body. Even through the water I felt this moisture in my crotch erupting once more. Then I finally removed it after more than 24 hours and sat down with them at breakfast in my normal clothes.
Later Kerstin got a new leotard and donated me her old one. I still have it, and even put it on regularly, though it has become somewhat threadbare by now and also a bit tight.