Dirty Filter 

When a man is having anal sex with someone, pulls out, and busts on the same someones face through the excess ass residue (doo doo), effectively filtering the discharge through excrement.

Bovice sure 'dirty filtered' that dude the other day.
Alex's face was all white and brown from that dirty filter.

Dirty Filter by DSauce June 13, 2009

Dirty Coffee Filter 

1. verb. A Dirty Coffee Filter is much like a teabag except that that when one is dunking the scrotum in ones mouth they either shit or wipe their dirty ass on the nose or face. Thus making the face look like dirty coffee grinds have been wiped on the face.

2. A teabag with fecal matter

I was going to teabag Kim last night, but I ate white castle and my ass just let go, and I dirty Coffee Filtered that bitch.

Dirty Coffee Filter by Gags730 October 13, 2014

dirty filler

The act of taking your dick, sticking it in the all the toilets at your local mcdonalds and giving a girl anal creampie

Michael: Hey Jannet, wanna dirty filler?
Jannet: Michael, you just gave me one yesterday!

dirty filler by Fatfuck2136/ January 20, 2020