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

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"