the fluff off a bum
a fluffy bottom
by laura simmons October 04, 2003

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the fluff that gathers in your anus after a long day of sweating
dude you got bumfluff on your face
by yar mudder June 11, 2006

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In gaming terms, Bumfluff would be the term used for cheaters. People who are shite and need cheats so they can win.
2/7/03 16:27:36 (+Bumfluff) Vlad \o/
2/7/03 16:28:40 (@Vlad) fo you cheating cunt
by Cheese July 02, 2003

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Fluff from one's ass; usually blue.
"Dude, you got bumfluff on your face..."
by -Mikey G- February 12, 2003

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The fine, soft hairs on your upper lip if you're a lady of a certain age.
Oh my god! Look at the bumfluff on her lip. That moustache is better than mine.
by Turlster September 08, 2017

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