In the gay male subculture, this refers to anal intercourse where there has been a deposit of semen into the rectum of the partner(s) and the depositor continues to thrust in-and-out of said rectums. Copulatory movements like the primal reflex of pelvic thrusting is the prime action causing the situation. After ejaculation in to whatever receptacle, the male of most vertebrate species stops penetrative motions (if the species needs it) and returns to nominal. However, when semen is deposited into an environment not intended to receive and chemically balance it (like a rectum), the result of this prolonged thrusting is an aeration of the proteinaceous materials abundant in human semen, the majority of it volume being water and it's pH being comparatively basic, this leads to easy spoilage. Thus the resulting product is does not remain the opalescent milky water mixture, but rather is changed into a frothy, opaquely white material. This is where the terminology originated when used in the aforementioned context: gay males often prolong their gyrations to assist their partner in achieving climax whilst together.
For that matter, it can of course happen in male-on-female intercourse with the female's rectum being the receptacle, but the association is not widely maintained.
"Mark didn't come as easily when he was with Rick last night. So, RIck wound up churning the man butter."
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Expression Related to Cheese and crackers of oh my god
Person 1: My Sister Just Finished 1 Grade
Person 2: Well Butter My Buns Congratulation's
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This is the term used to describe an individual highly obsessed with peanut butter, who moves his limbs like a dinosaur.
Look at that awkward walking man with the peanut butter on his spoon. He must be a Peanut Butter Saurus.
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its when you put peanut butter on a spoon
have you guys ever looked up peanut butter spoon on urban dictionary?
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Slapping your girl back and forth across her face with your post-coitus, wet, semi-flaccid penis.
After Rachel got my nut, I treated her to a few warm butter slaps before wiping up and leaving.
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Anal sex to the point where it gets all gooshy.
damn bitch, yo ass is making peanut butter!
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When using cheap toilet paper and your finger(s) rip through & you end up with visible crap on your finger(s)
I wish they would provide better toilet paper at work. Every time I wipe my ass I end up with Peanut Butter Fingers
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