snarf rag 

Rag used to wipe away fecal debris on a man's penis after engaging in anal sex

Dean left his snarf rag in the bathroom and Dave thought it was a hand towel. He would have been better off not washing his hands after taking a dump.

snarf rag by Ritebackatya December 14, 2013

snarf rag 

Use of a bandana to wipe away any debris left behind after engaging in anal sex

"You know Dean had too much to drink when he wipes his nose with his snarf rag"

snarf rag by Rite acharya December 14, 2013