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a person who is too lazy to get dressed into regular day clothes and lounge around the house is a bum. a mub is someone who looks cute in doing so.
mub by mandapanda January 17, 2005
Related Words
mubarak mub Mubtasim mubbs mubu mubes muber mubin mubina muba
to rub your hand up the crease of your buttocks and around your anus, then ambushing an unsuspecting victim with the same hand ih their face (whilst shouting 'mub' at them)

mub is bum backwards
boasting to a friend :"I leapt out and gave him the mub, he was discusted".

to mub someone
mub by brewlio May 11, 2007
Abbreviation for "Messed Up Bitch"
Definition: (noun) Referring to girls or girly guys who are used to debauched life such as drinking, doing drugs, and getting laid or have absolutely lost a sense of morale
She's a MUB! She's now going out his ex-boyfriend's father.
MUB by dododo olleh July 25, 2011
A bum off the street or walmart that is incredibly cute/hot. This word was created to differentiate attractive bums from the many unattractive ones.
Wow, that babe is sure a mub.
mub by MuPie January 17, 2005
"Man, that girl is mub!"
mub by henry-ray November 24, 2002