The rag you use to wipe your load up with after beating off.
Don't leave your jack rags on the bathroom floor.
ayon kay wino joe ika-06 ng Mayo, 2003
A piece of cloth used to catch the ejaculate that shoots out of one's penis when he masturbates, or "jacks off".
"I can't believe your girlfriend is using my hork-encrusted jackrag as a napkin! Gee, she wipes her mouth an awful lot."
ayon kay Fo Shizzle My Nizzle ika-08 ng Hunyo, 2004
a rag or piece of clothe used to catch ejaculation when masturbating.
Hey bro i used your tee shirt to jack off on. Hope you don't mind
ayon kay ikonworx ika-09 ng Pebrero, 2004
Any form of cloth used to clean up with after jacking off.
"Quick, I'm about to cum, hand me my jack rag."
ayon kay BRAUCHWURST ika-19 ng Abril, 2003