look up any word, like smh:
 
1.
Messed Up, Fucked Up. Somethin u did or a place.
Man thats really Mucked Up how U snitched
by Shanell May 27, 2006
 
2.
To have messed up, to have made a mistake
I mucked up when I went after him.
by SakuraSaku May 11, 2009