Symmesticles 

N, a pair of testicles perfectly matched in size, shape, texture or any combination of the three to an uncommon or comment-worthy degree.

"My gosh, I've never seen such testicles. They're so balanced and even and....symmetrical. They are, hands down, the most perfect pair of symmesticles I've ever laid eyes on."

Symmesticles by Idley C. September 6, 2007

Shmesticles

Testicles--written in a way as to lessen the vulgar sound and meaning.

I got hit in the shmesticles the other day

Shmesticles by Dr. Fanning November 1, 2009

smesticles 

testicles that give off an extreme odor.

daaayamn i can tell u got smesticles from all da way ova hee

smesticles by smog fog log August 1, 2012