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Creature known from the Dr. Seuss story "How the Grinch stole Christmas", where it's purpose is pretty much the same as the (poor) Christmas turkey - to be eaten.

In the motion-picture by Ron Howard and with Jim Carrey as the Grinch, it seems to have eight legs.
And he... ...HE HIMSELF...! The Grinch carved the roast beast!
by snoophoggyhogg August 04, 2008
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2
what i write down in my book when people order roast beef at work.
that dude at table 313 wants the fancy fixins roast beast dinner.
by CommanderCutie May 03, 2009
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3
Barbequed meat on the carcass, typically pork, as with a pig roast. Roast beast is usually slow cooked on a spit over an open flame.
The bikers constructed a fire pit, what with to cook the roast beast.
by tyr_shadowblade June 13, 2006
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It does not matter how you do it. It's a Fecal Mustache.

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4
same as roast beef.
describing loose vagina lips.
her cooter was like roast beast
by seeeewwwwwweeeeeee November 30, 2004
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5
An incredibly disgusting vagina. Beyond repulsive. It may break your cock off.
Don't fuck with that roast beast.
by jg306 July 05, 2009
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The vengeful act of crapping on a lover's chest while they sleep.

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