What is Jack Rag?
1.
The rag you use to wipe your load up with after beating off.
Don't leave your jack rags on the bathroom floor.
2.
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
3.
Any form of cloth used to clean up with after jacking off.
"Quick, I'm about to cum, hand me my jack rag."
4.
A pornographic magazine that provides visual stimulation.
Jay was up shit creek when his wife found his jack rag under the bed.