A person you only plan to have sex with once. A one-night stand.
He's just a friend but he's cute enough that I would consider a one-off.
by okaytoday April 21, 2006
Get the one-off mug.
(n) a one time occurence. An ad-hoc exception to rule. Corporate jargon meaning that you'll do it once and not repeat.
Let's just treat this as a one-off and make sure it doesn't happen again.
by tg28 November 8, 2006
Get the one-off mug.
Chiefly British.

-adjective
1. one of a kind; unique.
2. done, made, or happening only once.
-noun
3. a one night stand.
4. something done, made, or happening only once.

This began as a British expression but is now known in the US and elsewhere.
Eddie: Say what?! You base-jumped off the Empire State Building? Were you insane?!

Johnny: Hey, it was only a one-off. I was a turk lad at the time and a little drunk, and I don't think I'd ever have the courage to do it again.
by Raven Grace October 23, 2007
Get the one-off mug.
The one-off neon in Jinsoku is so tight, I wonder where he got the idea for that widebody!
by scottyonapotty February 3, 2005
Get the one-off mug.
A happening that occurs only once---not repeated---a unique event not seen before
The cheer leader's accepting a date with the chess champion was one-off for her ilk.
by pikeplacemarket June 18, 2009
Get the One-Off mug.
A quick (often anonymous) one time sexual act with another of the same or opposite sex which ends in climax.
Dude, I can't believe that had a one off with that cop to keep from getting a ticket.

Damn, you really had a one off with that hot soccer MILF behind the beer stand?

by Big NYC Jay June 25, 2008
Get the one off mug.
1. To act quickly without much forethought.

2. To perform a task using as little effort as possible
Person 1: "Did you finish your report?"

Person 2: "Yeah, but I one off'd it. It's a C at best."
by Gamurman November 13, 2011
Get the one off mug.