Top Definition
An odor that originates from a sweaty, usually unwashed, scrotum. The odor can range from peculiar, neither smelling good nor bad, to down-right awful. An awful sweaty nut funk smell is a good indication of the early signs of jock itch. The causes of sweaty nut funk range from physical activity, to nothing more than a long, hot car ride. Sweaty nut funk can often be treated with a warm shower, in which the scrotum is cleaned vigorously. If sweaty nut funk persists, contact medical help immediately.
After hours of riding in the car, Steve found humor in forcing Justin to smell his sweaty nut funk.
by Stevolio August 28, 2006

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