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used to insult someone who is an idiot and brains gone to much because of repeated drug use.
Yo, that jeff piercey is a fuckin mush bag
by Steve Thornhill January 22, 2008
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The vengeful act of crapping on a lover's chest while they sleep.

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Mushbag is a word to describe someone who is too soft, too weak, or cannot take a punch.
my brother is such a Mushbag I'm gonna Kazooki him at 4:20 pm.
by TheBlackMist May 09, 2017
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Soft and offensive. Just like you.

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