Jackin in Other's Presence

Ok, I jacked off since I was young. This happened a number of 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 was looking at 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. HAPPY JACKING!