Here's some of mine:
During the last few months, in my circle of friends, we've had a "let's see who can fuck up the other guy's car the best"
Car #1) Passenger, Driver's Side, and windshield covered in honey and adorned with copious amounts of teabags.
Car #2) Bisquick, eggs, and milk on the windshield, piss on the doors, and marshemellow fluff in the doorlocks.
Car #3) Baby powder on the windshield, roof, and rear window
Car #4) Removal of license plates
Car #5) Two "eyebrows" consisting of human hair and honey
Car #6) Shit on the tires, body, and window
So, there you go.