one-off

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 November 8, 2007

Finched One Off

This is when someone with the surname "Finch" excretes toxic chemicals into the local atmosphere. These chemicals contain chemicals such as Methane, which can cause dire effects, For Instance, Cholera, Diarrohea. These chemicals can be excreted via the rear end, sweating, or from wearing sewage clothes, such as a fake Arsenal shirt. Unfortunately, there are no known cures for this unfortunate disease, but a Deodrant can, and a bath would be very helpful

"Oh bloody hell Craig, you've Finched one off"

by Christopher Chapman September 26, 2006

tie one off

to shoot up drugs intravenously

Delina wanted to really "tie one off" so she bought a teener from her dealer.

by aniled June 4, 2009

one-off

short for One of a Kind

The one-off neon in Jinsoku is so tight, I wonder where he got the idea for that widebody!

by scottyonapotty February 3, 2005

Shoot one off

The action of climax during masturbation or sex. Usually when a male ejaculates, the semen shoots out as if a gun would do.

Male 1: It's hard being ugly, I can't get any type of sex bro.
Male 2: Just shoot one off and you'll be fine dude.

by schleepymane April 20, 2016

crack one off

v. To blow your load, or cum

"I got so excited when I saw her that I nearly cracked one off."

by BigJC December 1, 2003

crack one off

v. To fart, usually loudly or pugnaciously.

Some dude on the train cracked one off as I passed him by.

by Niall February 11, 2004