Top Definition
When a MALE injects milk or a dairy product into a FEMALE'S anal cavity, the FEMALE then squirts it back out into a glass or beaker, & the FEMALE or MALE drinks it. A delectable treat.
"I met this chick named MARCI at the Scoreboard Bar. We went back to her pad & she allowed me to put some milk up her butt! MARCI squirted the milk back into a glass & she drank it!"

DIRTY MARCI Spanish translation; "MARCI SUCIO"
by Filthy Willard December 07, 2010
To masturbate with a double-ended dildo and a farm animal.
I can't believe I seen her doing a Dirty Marci as I passed the Johnson farm!
by dirty boots August 20, 2008
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