When I was going through puberty, thirteen I guess, I was crazy with curiosity. My girfriends would talk about sex and I was all ears as I knew absolutely nothing.
My curiosity of course was about the boy side of things, erections, sperm and most of all the magic word; 'ejaculation'.
Come to find out, through my persistent questioning, that one of my friends knew first hand! Wendy told me that her older step brother did it 'all the time' where she could see him; that he'd leave his bedroom door open every morning and be doing it on his bed when she walked by!
She said that at first it grossed her out, but that she 'got used to it' and that he obviously wasn't going to stop doing it. If she said anything, he'd tell her not to look if she didn't like it.
So, she said she started to in fact not only stop and look, but wanted to; that it made her 'get wet'!
She told me all the details, that he was uncircumcised and was pretty long (she'd hold her hands apart and show me), she told me how he jacked himself, how his balls looked and that when he got really hard that his 'redish' tip would poke out.
She told me she didn't know what ejaculation was either until she saw him do it, and that after he did, he would stop. She told me how hard he'd be breathing and excited he'd get when he was going to do it; how fast he'd jack; how the cum looked and how it came out in spurts; that he would be laying on his back and it would go onto his belly or sometimes onto his chest.
She said he had a box of tissues on his headboard and they 'weren't for blowing his nose!'
So, I would ask her every day, stuff like 'So, how was big brother this morning.. was he doing it?' And usually it was, 'Of course'. She said it was like her morning routine now; and that she'd make a point every morning to walk by his room whether she needed to or not.
Wendy told me that sometimes when she got 'wet' watching him, she'd have to go take care of herself afterwards, but that she wasn't going to ever do anything in front of him or with him.
It was some years actually before I had the pleasure of having my own experiences, and when I did, I was ready for it, thanks to Wendy!