I'm pulling a prank on my friend, and I've decided on this..
I'm going to write up a note that says, "Sorry I Damaged Your Car!!! Please call me at (insert pizza place # here), so that we can exchange insurance information.."
and then put that under his windshield wiper blade.
That way he reads the note, knows something is damaged (well, the note says so) and then be horrified because he can't figure out what is damaged...
Relatively easy, painless (and legal..

) and funny, in my opinion.
If you have suggestions or comments, feel free to share.
- Brandon
"WHIP IT!"