finishing rag
Any sort of towel, cloth, tissue or sock etc. that a male uses to complete the final stage of his masturbatory act, eliminating mess and/or assisting in clean up afterwards. Can be for one-off use or reused multiple times.
Tom- "Hey man, what's this crusty towel lying under your bed?"
Jeff- "Oh, that's just my finishing rag."
Tom- "Nice!"
Jeff- "Oh, that's just my finishing rag."
Tom- "Nice!"