The art of a partner (usually female) getting underneath a male's testicles so that they encompass her mouth entirely, and exhaling through the mouth as if blowing bubbles with a soap ring-making a flapping noise.
"Nicole was talking about that Swedish dude, and how she wanted to give him a good Scrotum Bubbling, but not sure if they ever did it.
by 5054life January 4, 2012