The product of yeast build-up in the moisture of the folds on the male scrotum. It is called "frumunda cheese" becuase it has a cottage cheese-like apperance and smell, and because it comes frumunda (from under) the nuts. The french call it "brie"

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.

Cheese from under your balls.

Human Smegma
Smegma allowed to accumulate long enough to become visible.

Both males and females produce smegma. In males Smegma is produced and accumulates under the foreskin of uncircumcised individuals; in females it collects around the clitoris and in the folds of the labia minora.

stink that builds up from under the scrotum due to bad personal hygiene

The balled up toilet paper and poo particles stuck in your chode hair (taint and ass hair) that has been left to turn into a pungent stank from under. A minimum of 24 hours of fermentation is required to turn chody into aged frumunda cheese.

if you don't clean the head of your dick for a while, you will notice a sticky, smelly, greasy, white residue, known as frumunda cheese