The accumulation of sweat, dirt, grime, and stank under a man's ball sack after the daily grind. Usually far to potent for the possibility of sexual acts such as fellatio. See also duck butter.

The accumulation of sweat, dirt, grime, and stank under a man's ball sack after the daily grind. Usually far to potent for the possibility of sexual acts such as fellatio. See also duck butter.

Similar to Smegma.

Fermunda refers to the inevitible build up of a cheesy-like substance around a man's genitals when they are unwashed for a period of time. This phenominon appears particularly after a period of lovemaking.

Fermunda stems from the proper "From under."

The shit that collects under some unwashed nuts.