Define Muck Up Meaning

Muck Up

To ejaculate on a girls face

Put your balls in her mouth and get her to hum until you muck up on her face.

By Kathie

Mucked UP

Messed Up, Fucked Up. Somethin u did or a place.

Man thats really Mucked Up how U snitched

By Hinda

Mucked Up

To have messed up, to have made a mistake

I mucked up when I went after him.

By Opalina

Mucked Up Cunt

when a woman's vagina and rectum fuse,then ulcerate, causing feces to come out of the vagina.

i would not want to be a mucked up cunt, or go down on one either.

By Britni

Muck It Up

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 Carey

Muck It Up

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 Ethelind

Mucked Up

A combination of fucked up and messed up

Person 1: What happened?
Person 2: Oh my god, I mucked up

By Susan

Crate Muck-up

The time period when Valve released a TF2 update with spaghetti code that forced the crate series to always drop unusuals. This resulted in the unusual market crashing with absolutely no survivors left.

The Crate Muck-up was one of the worst disasters in TF2 history.

By Babara