stubble bubble 

When the loose skin of one's testicles is bunched up, and made to look like a chewed piece of gum.

Male 1: "Hey bro, want some stubble bubble?"
Friend: "Ye-- Ew what the fuck?!"

stubble bubble by Stubbley November 15, 2015

Stubble Bubble 

An aggravated ingrown hair that has resulted in a whitehead or a cyst on the face.

That's a mad stubble bubble you got on your forehead fam.

Stubble Bubble by hc_0 September 2, 2021