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1.
(Noun) A individual who dines on the contents on another individuals butt or ass.

(Noun) Someone who tosses another persons salad when they have to poop.
You really didn't know that Jack is a serious butt grubber!?

Jack totally grubbed down on that guys butt. He is such a butt grubber!
by RastaMyPasta September 14, 2009