Top Definition
A small morsel of wet Gravy Train or Kibbles and Bits dog food, usually after evacuation from the human male anus after being "pushed in" during male homosexual activity.
Wow what is that disgusting looking piece of crap on your couch?
That's not a piece of crap, that's a mcgibblet. My roommate and I really got into it last night.
by Mcgibblet October 06, 2013
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