Top Definition
A messy ruckus or diaster
1-There was a food fight last friday it was a mukcuss

2-I tried to do a backflip while standing on me head it was a muckus
by 3rdgen September 15, 2007
1 more definition
Sloppy wet vagina that is wet, brown, and horribly hairy
The old woman went commando and everyone saw her muckus
by jobin blowhorn October 23, 2009

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