Same guy, two different incidents:
1) I was walking, Steve was riding a bike, through campus and we saw a table with one set of legs folded up. I jokingly said, "bet you won't use that as a ramp!". Steve tries to use the table as a ramp, the table collapses, he falls off his bike, and cracks his collar bone.

2) Steve, two other friends, and I were heading back to my car at the mall. One of the friends calls shotgun, and I call "blitz!" (for those not familiar, blitz means that whoever gets to the car first gets to sit in the front seat). Steve sprints for my car, reaches out for the car, gets jostled from behind, and his full body weight slaps his finger against the car and breaks his finger.