don't forget the Scooby Booby Trap -- ride with somebody in their car. they park, you say "just a sec, be right out" meanwhile, you turn radio to full blast, turn on wipers, fan, turn sigs, AC, etc....
better yet, get aholt of their locking remote somehow, then hide out in a car in same lot. they come in, park. lock car. you unlock it, they lock it again, etc etc
did this one time to a new guy in our film crew--the remote would alsp pop the back hatch. I was in a car behind him. HEY, ur hatch is open. he gets out, slams hatch. soon as he gets back in, I'd pop hatch with remote, and repeat sequence until the rest of us were almost pissing ourselves laughing. once he figured out what was going on, i thought he was gonna punch me out. :
New Guy flunked sense of humor test!
once this thread gets really going, I may just be hiding under the bed next Tues.