I don't know how funny this would be to anyone else, but it was really funny at the time.
Two years ago, I was living with three other girls and we were watching the MTV Music Awards on TV. One girl was upstairs doing something, but she said to call her when Britney came on. (It was a running joke because she hates Britney Spears...really just wanted to see what kind of skanky outfit she'd be wearing). So later we yelled up to her, "Hurry up, you're missing Britney!" and she came running down the stairs. Well, we had a curved staircase and the middle steps were pretty narrow. So, when she was coming down, she tripped, went flying in the air, and landed in a tangle of arms and legs at the bottom of the stairs. We went over to help her up and all our other roommate could say was "ugh! you missed Britney!"