Top Definition
Taking the zapstrap ballsac to the next level, the all-in-one involves the placing of the penis as well as the testicles inside the zap strap before tightening. Not for the faint of heart.
"If I get drunk enough that someone gives me an all-in-one while I'm passed out, I may need to get that shit amputated."
"Dude, it'll already BE amputated!"
by crimeny March 14, 2009
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