Muy bien means very good.
Teacher: your work was muy bien, travis.

Travis: thank you, miss Tanya!
by brentlion August 2, 2009
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Used to describe something that you found to be very hilarious.
by binxmontecore January 28, 2009
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Spanish or Scarface version of the English term "crucial"; also used when something is very crucial or when something very crucial has happened or is about to happen
Dede: If he makes all of these free throws they'll win the championship
Arjun: Muy Cruciale !
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When a chick is giving you head, she not only manages to deep throat, but fits your balls in her mouth along with your cock.
Dayummm geena really knows how to muy trabajador.. she had room to spare!
by Dome lover April 13, 2008
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