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1.
verb \ˈtərn\ˈwən\ˈaüt\ˈbī\ˈhand\

a euphemism for masturbation.
Billy: "Where the hell are you going, Josh? You're gonna miss the best part!"
Josh: "Oh...I, uh...I just gotta take piss..."
Billy: "uh huh...well, you just go ahead and turn one out by hand, but I'm not-
Josh: "Fuck you, dude! I told you, I gotta take a piss!"

Billy: "Whatever, but I'm not rewinding it until I'm done. I wanna finish this thing before my parents get home."
by Jambo_11 May 09, 2013