When I was much, much younger my older brother and I shared a bedroom. I caught him masturbating once before I knew what it was. Also, my older sister caught me masturbating once. I was so close to orgasm I didn't notice her watching. Boy did she get a good show when I shot my load all over myself!!!!!
I heard some of my cousins a couple of times (boy and girls), and I saw one of them once (girl). I always followed her/him.
Like, I never saw my dad jerking off, but I'd hear him in the bathroom grunting and groaning and, really, how long does it take to pee and/or poop? I'll say that, of course, I'd seen my brother jerk off many times and that I had a few country cousins who had no shame when it came to whipping it out and spanking the monkey in front of everyone and as far as I was concerned, there's no shame involved at all since they weren't doing anything that I wasn't doing to myself and at every chance I had to. So watching them jerk off wasn't unusual.
As a kid in bed at night, I watched through a crack in the wall, as my cousin in the next room was fucking his wife. When he unloaded she got up, faced the wall where I was watching and wiped the big creamy load out of her big red hairy quim as I nearly passed out with shock and awe. My cock got a pounding straight away. Next night my brother swapped beds with me and watched Him up her again as He pulled his meat. She must not have wanted to lay in the wet patch so we both got an eyeful as she wiped the come out of her twat.
It sounds hot... because it is. Hear them jerking off, seeing them jerk off, or you're the one jerking them off.
My brother and I used to pull off in the same room, and we were quite young. No come emerged from my cock until I was 15. He was younger so he hadn't either. I was so excited I could finally come, when I was in his room the next opportunity, I pulled myself off for him to show him the sperm coming out of my cock. Sort of an 'I got there first' moment.
I didn't see the first load come out of his cock but yes we pulled ourselves off together. I had his cock in my mouth briefly, and mine in his mouth, once. I don't think sucking was a thing we did more than once. He said once, 'I'll fuck the ass off of you' once. I declined and did nothing with him after that. I didn't want the two of us to get right into each other's ass. Too much for me.
Mom, heard and seen her so many times from birth to leaving home. She had seen me and my friends as well.
My cousin and I used to masturbate together a lot when I stayed with his family one summer. We shared a room so we had a lot of opportunities.
My brother came on me regularly, usually against my will or when he thought I was sleeping. Probably one of the reasons why I haven't seen him in many years.
I grew up in a family of seven. We lived in a three bedroom house. Do the math lol. Yes I've seen and heard several of my brothers go at it, and they have seen or heard me.