A contest of virility between two men, as demonstrated in Cyborg (1989), in which both men tear off their shirts and exchange screams of rage until one can no longer handle the other’s machismo.
Watch the man-off scene in Cyborg.
by sdn November 29, 2007
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To masturbate, or to otherwise do something private and/or embarrassing.
Anthony: Steve, your a douche, why don't you just go man off in the corner.

After seeing a very attractive naked woman on the beach, Steve felt the sudden urge to man off.
by ezra j March 6, 2008
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The phrase someone says after the know they can't come back to an insult that was just said to them.
Tim: "Haha, oh my god, Mike, your such a fag.

Mike: "Shut up, Tim, your birth certificate is an apology from the condom factory."

Tim: "...fuck off, man..."
by Xyotei April 2, 2011
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April 25th when its legal to cut any mans dick off that was bad to you
Victim:Do you know what day is it?
(Male)r@pist:No what?
Victim:Its national cut a mans dick off
R@pist:What??
Victim:*cuts his dick off*
by kambadassihm March 21, 2021
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The guy you see from time to time when you are currently seeing somebody else.
Where’s Desiree at these day’s?

Oh, she’s probably with her off-man, you know how she gets around.
by DeVinci A.I. June 13, 2022
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