To achieve ejaculation within the anus of another.
See "donkey punch"
by Harry Merkin August 06, 2002
A condition where fecal matter gets on your nutsack after taking a nice healthy shit and then wiping your ass from back to front.
That shit on your underwear doesnt look like skid marks, i bet its from mudnuts!!!
by IBStudent April 02, 2006
Fecal matter mixed with semen in the anus. Primarly used at scat parties. (aka: shemen)
Before arriving at his bi-weekly scat party, jaay mixed up a fresh batch of mudnut in his anus.
by Legendary Films September 28, 2003
doin a girl in the butt then pullin out and shootin it in her mouth.
my hizo wouldnt stop bithcen so i muddnutted her.
by the gavo69 February 12, 2003

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