My cousin went to Renssalaer, in New York for his undergrad degree. He and some friends drove to Canada and on the way back they had a little trouble. The U.S. Border Patrol cops asked them if they had "anything to declare" and my smarta** cousin replied,
"Nothing except the dead body in the trunk."
Good idea!
So of course all the guys have to get out of the car. The cops take all their names and interrogate them. They search the car. My cousin's stupid comment resulted in a 3 hour delay. (this was pre-9/11, who knows what would happen now)
...but the best part...
THE COPS NEVER CHECKED THE TRUNK! They searched the entire inside of the car but never tried to get into the trunk. Go figure.