the fluff that gathers in your anus after a long day of sweating
dude you got bumfluff on your face
von yar mudder 11. Juni 2006
In gaming terms, Bumfluff would be the term used for cheaters. People who are shite and need cheats so they can win.
von Cheese 2. Juli 2003
Fluff from one's ass; usually blue.
"Dude, you got bumfluff on your face..."
von -Mikey G- 12. Februar 2003