I guess I've goth stories from both sides. Mate comes round, gaming etc..sorta about 4 in morning, asleep, woke up, he weren't there but I needed toilet, went toilet but could see my bedroom light was on...so walked in after and he was knocking one out in my room the sick bastard to one of my dvd's! Although he was faced the other way so didn't see anything and he didn't really give a shit, just laughed! To be fair, that wasn't bad. As a male, it's understandable.
A few years back, was about mid night, thought everyone had gone to bed, so whacking one out and then without a knock, Mom comes in, my back is to her luckily but I had like the porn channels on sky in my room and on the PC and obviously with my hand around my cock, I couldn't multi task that much, I got my hand off my cock, so there was a good starting point before she came in and put it away down my shorts before she saw....however, I fucking minimized one porn movie only for another to pop up so that epically failed while I didn't even think about the TV...so by the time she sort of got close (tbh, I don't even think she realised to start with, blind hoe)...I thought I had got away with it as I was able to quickly minimize everything on the PC, yet forgot about the TV with some naked girl on, the nervous look on my face and edge on my face, she knew what I was doing and although she never spoke a word of it since, well apart from the next day at dinner to step dad..."you should of seen of what he was doing and watching last night"...WTF....the fact for the remaining time since, she's always knocked and waited for 4/5 seconds outside my room before entering at night says it all.
Embarrassing.