No-Wash Underwear are the invention of a young medical student, Rob Libfeld, who thought of the idea while dealing with embarrassed patients in the hospital.
His ingenious solution was a pair of underwear that’s yellow in the front and brown in the back, meaning stains don’t show. There is however what he calls the "odor factor."
Ingenious… not so sure. Perfect gift for your slob friend… yeah.
[Via]