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(N): The underwear you ran in days ago that a girl uses to wipe her face off with after you bust.

A "Rancid Napkin" may be dry or slightly wet, but must emit a foul, rancid odor similar to that of ammonia.
Sorry babe, no towels, but try this!" "Mmmm, rancid napkin!
by RancidDoctor September 01, 2010