The moment in which a male decides to man-up and do something unappealing, scary, challenging or loathed, possibly an event continuously postponed, for a greater good.
Matt: Mark, you have to let that girl know how you feel.

Mark: I know man but what if she rejects me? She's super hot.

Matt: Do you know what time it is?

Mark: Uh 12:30 man?

Matt: No Mark, it's man o'clock. Go get her tiger.
by handsomel0rd May 27, 2014
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A very paranoid man that leaves his friends house very late and tells his mother everything. His name is referred as an "Erik".
Friends talking about weed, alcohol, and the friends mom hearing everything meant that The 3 o'clock man needed to get the fuck out of the house because he was paranoid as fuck.
by Brian Knigger January 10, 2009
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