When a guy reaches round and starts counting the genital warts before being entered
Oi Dirty Marko, it feels like it's ribbed.

Need two hands to count them all
by It's only banter November 20, 2020
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When a guy cums in a diarrhea filled ass and slurps the juice. Kinda like chocolate milk.
Guy 1: Last night i did a Dirty Marko with this chick!
Guy 2: I thought it was called chocolate milk
Guy 1: Chocolate milk is with normal poo, this one is with diarrhea
by LittlePeepeeDrinker January 2, 2022
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A guy who eats with his mouth open
Look at that bitch, he’s doing a dirty Marko
by Bussyeater August 31, 2021
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