When i was 16 we were swimming at a friends house one day while her parents were at work. It was me, 1 guy friend, girl whose house it was and 2 other female friends. Guy friend and I manage to talk them into taking their tops off. Keep swimming, playing games, etc when guy friend and his kinda gf leave to go fuck after he pulls his dick out for a bit. Just me and 2 girl friends now. Ask why I didn't pull mine out. Get embarrassed because sex stuff plus I'm smaller then my friend and there was pool shrinkage. Embarrassedly explain that. They're super chill and reassuring, finally talk me into stripping for them. They don't laugh or anything, more treat me/it like it's a cute little thing to nurture. I can't help but get rock hard. This compounds their reaction. This goes on for like 2 hours and I'm almost sick I'm so blueballed. They can see I'm in pain. Try to excuse myself to the bathroom but one brushes against me trying to side step out of the way of the stairs and this causes the point of no return in an orgasm which happens despite how desperately I fought it