Top Definition
That grotesque ruddy,oily & watery substance that squirts onto you're cheeseburger when you forget to shake the ketchup bottle.
Fuck! I forgot to shake the ketchup bottle and now my burger is slathered with wetchup.... Fuck!
by Tropes May 15, 2006
The nasty water that comes out of the ketchup bottle before the ketchup actually comes out.
As soon as I opened the bottle of ketchup to pour it out, the wetchup came out first and made me not want to eat my burger anymore.
by Zach Brendahl December 14, 2007
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