the fluff that gathers in your anus after a long day of sweating
dude you got bumfluff on your face
di yar mudder 11 giugno 2006
In gaming terms, Bumfluff would be the term used for cheaters. People who are shite and need cheats so they can win.
di Cheese 02 luglio 2003
Fluff from one's ass; usually blue.
"Dude, you got bumfluff on your face..."
di -Mikey G- 12 febbraio 2003