When you see a level 9 hottie, and you think you might cream in your pants but don't.
Hey, Jon look over there...that chick has got me dry ballin!
dri-BALL'n: latin origin (v.) when a man steams his wrinkly genitals with a hand held steamer while masturbating
"Did you see Rick with his steamer in the locker room yesterday?"
"Yeah, he was dry ballin in front of the entire team!"