Top Definition
The time of day when you find yourself wondering how it got so late ... and then realize you've been having sex all morning/afternoon/night/week.
"Oh my God, that felt so good."
"Yeah, but we got santorum everywhere."
"Mm, what time is it? ... Holy Crap! It's late o'clock."
by Akela December 11, 2004
This phrase is used to substitute a real time when it has become too late at night. Time is unimportant at the moment because of a number of reasons including: having a good time, becoming delirious from major sleep deprivation, too lazy to look at a clock/watch, etc.
Person #1: Whoa! I almost forgot I have to go. What time is it?
Person #2: I don’t know. It’s Late O'clock.
Person #1: Oh well, see you later!
by Freakin Bob!! October 24, 2010
noun--It sounds like eight o'clock, but it is definitely much later. Like 3 or 4 in the morning late.
"Oh fuck! It's already late o'clock and I still haven't eaten supper."
by noodlehead January 11, 2005
The time it is when you don't have a watch on and your date is getting uglier by the minute.
"oh, really? You're a vegan and don't drink alcohol."

"uh-huh. oh my wrist tells me it is Late O'clock. I have a thing in the morning. I'll give you a call sometime."
by Daniel S, March 16, 2010

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