the phenomenon of having excess hair on one's rear-end. Said excess hair is usually located on but not limited to the butt-cheek area. May also be located around the sphincter and thus contribute to the barking spider phenomenon.
One’s butter mop is your hairy ball sack that you swipe across that gooey mess between her nether regions and clean it up after you’re done fucking a lovely bitch you submitted your manbutter excessively all over 👍
We ran out of moist towelettes and I had to use my butter mop to clean up that mess of manbutter because she would’ve been drippingall the way to the shower