Let's see...
1.)Jumped off of the school auditorium balcony onto a theatre seat. (About 20ft)
2.)Did it again, this time putting a huge gash in my left knee.
3.)Stood infront of my friend's car, he started moving, I was on the hood going about 15mph. Another friend chucks a piece of ice at the driver, driver slams on the breaks, I go flying off, try to catch myself, smash my head in the pavement a few times and then skid a few feet. Got a concussion, blurry vision for about 30 minutes, and my hands tingled when I moved them certain ways. Oh and I didn't go to a doctor or anything.
4.)Silly stringed cars at a stoplight with a friend. Cops came.
5.)Video taped my friend falling in the street with crutches whenever a car passed, just to see who would try and help. Many did.
6.)Jumped off of 2nd level at my school's theatre (diff. from balcony) a few times. About 12 feet or so.
7.)Climbed up a few of the flies (ropes holding up the curtains) about 10-15 feet using just upper body strength. Fun stuff.
8.)Purposely made my truck fishtail on the snow. Did that a few times, it's best when going around a curve.
All I can think of for now, but my life is filled with me doing stupid things, so I'm sure I can think of more, or make some new ones.
-Jin