Top Definition
Noun. Anything gross, disgusting or unwanted.
Build-up on or around toilets, drains, or mouths, Pond scum, caked on food, crusty excess, or corrosion. "I am so disgusted at the schwag muck that is around the toilet bowl". "I refuse to stick my hand in that scwag muck!"
by Staci Rogert, *"PINKIE"* February 01, 2013

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