Ok, I've been jacking off for about 5 years now, since I was 11. This happened a few years ago, I think I was about 14. My grandparents were in town, and on this particular day my brother had a soccer game. I never went to them, so I thought that I would get to stay home for a nice 2-hour wank. But I found out that my grandpa was staying back. I thought I wouldn't get to jack but I was wrong...
After a few minutes everyone had left. I saw that my grandpa had fallen asleep, so I got on the computer. I was surfing some porn and started to jack off. Well, I jacked and came. And all while grandpa was sleeping in the next room.
I might add that I did this with the door OPEN!!
That's my story.