The material (often towel, tissue, toilet paper or nearby piece of paper crumpled to softness) used to ejaculate in to at the end of a strenuous masturbatory session.
What they don't often advertise, is that the ShamWow makes a FANTASTIC Jag Rag.
by Sting Cunt-Stomper August 13, 2010
a rag used to clean up the mess after jacking (jaggin) off
i used alans bath towell for my jag rag and didnt tell him
by gggggggggggggunit November 19, 2004