In many gag stores or prank stores on the internet, you can purchase an ingenious noise-making piece of metal that subtly fits over the tailpipe of an automobile . When the muffler passes warm air through the tailpipe, the exhaust pipe car prank will make a high-pitched squealing noise. The car’s owner will believe they have a belt that needs sorely tightened. The harder you press on the accelerator the louder the squeal! I recently pulled this joke on one of my good friends but told his wife if he came to the point where he was going to take his Jeep in for repair, she should let him in on the prank. The squeal was so bad that he drove through town crouching his head because he was embarrassed to be seen by anyone he knew. He made an appointment to get the Jeep checked out but luckily his wife told him just before he left to take the sickened vehicle in for repair. Looking back, I really wish I wouldn’t have told his wife anything, although the mechanic probably would have taken the piece of metal off without telling him it was the source of the noise and charged him $350 for a new “Johnson Rod”.