My little brother had his 4th or 5th birthday party at Wimpy Burger. The member of staff tells everyone to get Mr Wimpy to come out by calling his name. Eventually the bloke comes out in this bizarre costume and meets the kids. My little bro was horrified at the sight of him and started crying and trying to hide. I guess the guy in the costume couldn't see very well because at some point he stood on a kids foot making them scream and cry, which only made the scared kids more hysterical with fear.

For years afterwards, my little brother (who was a handful sometimes) could be made to behave just by people in the room threatening to summon Mr Wimpy.