Assfluff 

Lint that collects in your ass hair, especially during night time.

During my morning shit, I wiped away all the assfluff that accumulated during the night.

Assfluff by Cyberwolf December 16, 2006

Ass Fluff 

When a male or female has pubic hair growing around their ass hole.

Usually in males flakes of shit can be found hanging from the hairs.

Can be spikey on the cheeks when shaved.

'Dude the chick i fucked last night had shit loadsa ass fluff!. I didnt know whether to fuck it or brush it!'

Ass Fluff by AliceW January 4, 2009

Ass fluff 

It is when hairs growing on your butt fall off and tangle into a ball inside your pubes or small holes in your skin

“I have so much ass fluff stuck inside my pubes”

Ass fluff by Not high Pink Floyd Fan June 6, 2018