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When two people have wild sex on Saturday night and wake up on Sunday morning to dried cum and smelly sweat.
Jake : Wow honey guess another Sloppy Sunday huh!
Kiersten : Yeah we should really shower!
Steve : Hey guys I got dibs on the shower gosh it really smells in here!
Jake : Uh what the fuck is he doing in your apartment?
Kiersten : Don't worry I'm calling the cops!
by SlopNChop August 06, 2017
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Hooking up with a member of the opposite sex on Sundays for nothing other then sex. Usually begins with the jimmy jam and can be followed up with the surprise sex on Monday if it is a holiday.
Dan enjoys sloppy sundays with Sarah
by boondocks5 November 02, 2007
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