look up any word, like dog in the bathtub:
 
30.
Massie's Underground Clinic for Kissing. In the fifth Clique Novel, "The Pretty Committee Strikes Back" by Lisi Harrison, it is an important part of the book.
Taken from the back cover, "The Briarwood Boys are staying in a cabin just a few yards away, which means the girls in Massie's Underground Clinic for Kissing (MUCK) might have to find the guts to put their money where their well-glossed mouths are."
by JennaQ April 14, 2006
 
1.
Ugly beyond all reasonable doubt.
That booty claps, but she fuckin muck!
by Z money cash $ fast $ slow $ September 12, 2009
 
2.
(v) In poker, to return your cards to the dealer without showing the other players. Differs from fold because folded cards cannot be shown during play (forced muck). Muck implies choice.
He mucked his cards so I couldn't see if he was bluffing or chasing.
by Coell May 12, 2005
 
3.
Universal verb for any action

To muck = to do
This guys muckin jeans and a hoodie.
Lets muck McD's before we muck outta here.
Its friday, course we're muckin Winston's tonight
by emmber March 20, 2011
 
4.
verb - To be on pills of any kind. usually ecstasy
John: Weren't you muckin that day?

Tom: Yeah, it was fun.
by contagion; September 12, 2009
 
5.
mucks is another word for magic mushrooms. and mucking is to be on them.
ex. those are some tastey looking mucks
ex. holy shit, i'm mucking.
by EssTeeEye March 05, 2005
 
6.
to do something
" muck that chew kid"
" just muckin some box"
" lets muck that za"
by the mucker June 29, 2009
 
7.
to screw up
he mucked up his driving test.
by TerMInaTER September 05, 2003