The lint stuck in your upper ass crack, from wearing various types of under garments.
This girl was giving me a rim job, and she licked out all of my ass lint.
The lint/fuzz that collects in one's ass crack over a period of time. Composed of excess material from cheap boxers and loose ass/crack hair. Usually found in a tangled mass by itching one's ass crack.
John discovered a massive clump of ass lint buried deep in his ass crack, and flung it at Bryan while typing this.
tiny pieces of feces/boxers that reside at the beginning of ur ass crack
Eww i jus wiped my ass and there was ass lint all over the toilet paper
dingleberries that collect at the beginning of ur ass-crack
eww i jus scratched my ass and my hand was covered in ass lint
Usaully you get it when you haven't bathed in a while and it collects in your crack and it suddenly becomes stuck with no way to get it out.
There's some in your crack.......