The testicles or ovaries -- in either case, the pair of organs which:

a. Produce hormones which, prior to birth, cause the development of gender-specific traits, and at puberty, cause the development of secondary sex traits. Testosterone for males, Estrogen and progesterone for females.
b. Produce gametes (sex cells) -- sperm in the case of males, eggs in the case of females.
c. Make young boys giggle.

I couldn’t care less (but one must keep up appearances, right?)

your testicles,your jewels,your cookies,your nuts,your beans ect........

Your balls or testicles. Shortened word is also just nads.

Balls, Scrotum, Nuts, Bizalls, Jiz Bag, giggleberries, yogurt factory, nads, kahonies, ka-chachkas.

The Rhode Island School of Design's school mascot is the Nads. They even have a big penis costume as the mascot.

It's cheering for the school/sports team.

An alias of Son Le, the great king of Can Tho from Vietnam