It's Always Seinfeld in Philadelphia...
They are the two doofuses of their respective sitcoms, both having a complex relationship coming to grips with adult life and with animals.
Charlie Kelly (Charlie Day) and Cosmo Kramer (Michael Richards) have a combined 23 years of entertaining on It's Always Sunny in Philadelphia and Seinfeld respectively.
Of course, Charlie Kelly famously portrayed Kramer in a Seinfeld parody scene for It's Always Sunny's 13th Season.
But both have got up to pretty crazy scenes on our screens, so can you tell who did what in this Charlie Kelly Or Cosmo Kramer Quiz?
Answers at the end.
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Alexander Greensmith has contributed 62 posts since joining in May 2019.