ahh... it was... a couple months ago. januaryish. me and my current girlfriend, now together for just over a year, were babysitting her 3 year old brother, and we went up stairs and got naked and had sex. we tried once, and her brother came in. we tried again, a bit later, and i came, then we were going a third time, and her parents got home, but it was cool. i went for... probably a grand total of under 5 minutes, and i dont think she really enjoyed it. but now, we're both so horny... its not even funny. good stuff.