Used to describe a flaccid penis when attempting to masturbate. It is another term for masturbation impotence.
"When I attempted to make knuckle babies, I ended up just cupping mud."
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A sludgy, full bodied cup of your favorite french roast. None of that decaf bullshit.
I could sure use a heaping cup of mud, brother.
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A disposable plastic drink cup with some water in it used by cigarette smokers as a makeshift ashtray. After a while; it becomes filled with so many used cigarette butts, the contents of it look like muddy tobacco sludge.
At Mike's party; I reached over for my beer cup. Since I was drunk, I didn't realize I was about to take a swig from the Mud Cup. Thank God someone stopped me before I chugged the whole damn thing.
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When the female partner empties a gallon of milk inside her asshole, the male partner then lays directly below the woman's anus and opens his mouth as wide as possible to receive a huge load of poop/milk diarrhea into the his mouth, having the appearance of chocolate milk or mud.
friend 1: Daniel you finished all the milk!?!?
friend 2: Yeah man last night my chola gave a full serving of a Peruvian mud cup:)
friend 1: Nice!!
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