Mariah Carey and Zeus.

Every time you make a credit card purchase, they're supposed to match your signature against the one on the back of your card. Nobody seems to check anymore, so John Hargrave tried to see how far he could push it with wacky signatures like "Mariah Carey" and "Zeus". Read the whole story in the original Credit Card Prank. 'The whole story' becomes rather bizarre in part two of the CCP when John decides to buy three HDTV plasma TV sets - and all of this can be found on ZUG.com, the world's only comedy site. At no extra cost!