Pranking

I'm a fan of a good April Fool's Day prank, so here's the best one I've read this year:
1: grab some nuts and bolts (preferably large ones).
2: go to an amusement park and ride a roller coaster.
3: as the ride starts, hand the nuts and bolts to the person seated in front of you, saying "hey, these just fell out of your seat!".
4: enjoy their expression for the rest of the ride.
Cruel, but amusing.