The act of wearing no underwear while in uniform while deployed. Slang word used by soldiers, while deployed.
Soldier #1: "Man bro, my balls were sweating like crazy today! You got an baby powder? It's gotta be like 190 degrees today in Iraq!"

Soldier #2: "Nah Bro, I'm Sandballscapin' today! I didnt even bring any baby powder! Boxers, briefs and drawers are so first deployment! Get with the third!
by MAS$UP: Warriors Of Freedom November 3, 2008
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