After a good doggie style romp, the jizz left on the tip of your cock gets rubbed into the chicks bunghole. A little poop gets mixed in during the rubbing and you muck it up.
After banging the bitch doggie style, I blew on her back. Then I mucked it up for a bit, before banging her sister.
by Dr. Davidoff Vilson March 28, 2005
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Muckit is when you take your cock and push it around in your bitches asshole...you smoosh around her shit and your gizz.
After I was done banging my bitch, I mucked it up.
by Dr. Davidoff Vilson March 22, 2005
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The unordinary, unpleasant state of being exuberantly mucussy.
Person 1: man, I've been feeling really mucked up recently.

Person 2: How do you mean?

Person 1: ja know, just super mucussy
by Random_yomamandme September 22, 2022
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Put your balls in her mouth and get her to hum until you muck up on her face.
by Jumpy June 17, 2006
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