Think twice about leaving your feet at the net for that overhead smash...
I enjoy badminton. On a different note, in gym class in High School during a free day some friends and I invented (maybe that's too generous a term) the game moshball. It was like basketball, except you didn't have to dribble, there was no out of bounds, and you could tackle whomever had the ball. It was a huge hit. It got to the point where everyone wanted to play, including the Varsity basketball players. THen the gym teacher put a stop to it. He said "I don't care if you knuckleheads get hurt, but there's no way I'll stand by and watch my basketball team get hurt." And that was the end Moshball's brief glory.