(n) An anacronym for "Multi User Character Kingdom" or other variations. Refers to a complex, often theme-oriented chatroom environment, similar to a MMORPG only text-based rather graphical and usually intended for online socialization. MUCKs are accessable either through telnet or specially designed programs known as "clients" (i.e. SimpleMU* or MUSHClient) and generally possess some degree of roleplaying.
1. She spends more time on the MUCK than she does watching TV.
2. Dave downloaded a client and registered for a character on the MUCK.
by discountalligator July 09, 2003
Ugly beyond all reasonable doubt.
That booty claps, but she fuckin muck!
by Z money cash $ fast $ slow $ September 12, 2009
(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
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
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
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
to screw up
he mucked up his driving test.
by TerMInaTER September 05, 2003
to do something
" muck that chew kid"
" just muckin some box"
" lets muck that za"
by the mucker June 29, 2009

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