meaning highly delicious. muy backwards is yum.

background: mexican cartoon from the 60's. actually i made it up.
this ice cream is muy yum.
by OMG 1337! October 10, 2004
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Awsome, Amazing, Gnarly, The best in the world, Cool, Extreme,
by Rikki David April 30, 2009
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hawaiian candy that has the same addictive effect as any controlled substance.
guy- aye brada i'm mahd bored
guy 2- i got, like, tree bags of dis li hing mui shit.
guy-YAYAYAYAAY
by holaquetal December 19, 2010
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Chick from local region of Hong Kong, who is a complete slag and lacks taste in fashion, comes across as tacky, rude and cheap. It is common for MWS to have STD's
Sharon is such a Mui Wo Slag
by Loalz June 10, 2008
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The sound you make when you see a guy that is as cute as a baby ,little puppy or a squirrel.
Macy: Muy Muuyy Muuuuy lil baby!!!
Sean: Awww thanks!!
Macy: you look like a baby squirrel
by caddilovin July 26, 2011
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Spanish; lit. very good marijuana.
for when the weed is goood
or Mexican, or from a Mexican dealer.
You got me that ganja, boy? Gimme some of that muy bien marijuana, man!
by Myiuki tweakin May 27, 2007
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