My buddy and I were working on a tree fort in my back yeard when I was 8 or so. He was on the highest "platform" which was a good 15 feet up in the air. He asked me to grab him a hammer to secure a board so I rummaged around, found one then called up to see if he was ready to catch it. He said something back, to which I replied "OK" and threw the hammer up to him. It crested the platform just as he was turning around and the sight of the hammer must have scared him shitless because he jumped back in shock and fell off the back side of the fort. He fell into a big pile of brambles and got 6 nails stuck in his back. I was grounded for like a month.
Got busted stealing candy from a Sugarcreek.
Played many rounds of doctor with my extremely hot female friend when I was young.
EDIT: Just last year I went out and got plastered. I black out for a good 2-3 hours and when I awoke I was in my bed... but was soaking wet. Now just for background, I was an RA in a freshman dorm at the time so when I woke up next to one of the hottest residents I was giddy with delight, but saddened by my lack of urinary control. I nudged her and said "Vicky, wake up," to which she grumbled incoherently. "Vick wake up, you pissed the bed."
Not only did she accept the blame, but she did my sheets the next day.