one-off

(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

Hole in one

When ejcaculating while laying on your back, and the sperm lands inside the belly button

Oh damn dude, I was nutting this morning and hit a hole in one!!

by Littlewillywonka March 15, 2019

cut one

1. To fart/expell gas from own bowels.
2. To cut an innocent as a part of gang initiation.

1: MAN!!! Who cut one!!!
2: To get in with us, you gotta cut one.

by ¡DŃ™! October 26, 2003

mental one

Mental One: Mental Orgasim. Also referred to as Mental O' or Mental. This is used when a person or persons is incredibly hot, sexy, and or beyond hottness or sexiness(etc.) that they give you a mental orgasim, via mental O'. Also can be used with mmm yes for more emphasis!

Example 1;
Person 1: oh that guy is soo hot!
Person 2: I know I just got a mental one!

Example 2;
*supa sexy person walks by*
Person 1: mental mental!

Example 3;
Person 1: hot guy two o' clock!
Person 2: mmm yes, mental one!

by Dacy April 13, 2007

Rip one

To rip a fart louder than a metal beyblade in a bathtub.

fat guy: Bro I'm about to rip one.
fat guy 2: same bro.
*farts so loud it ruptures the space-time continuum*
fat guy: bro that was so loud we might get arrested for disturbing the peace.

by AvgRedditor January 5, 2021

the last one

Very rare. Likely the person you'd want to hang around with, due to the fact that the age range who uses this term wouldn't be old enough to seriously go through enough to leave some unfortunate guy with a label saying how he might not want a ton of trauma in his life just yet, or better yet, has some odd thing called common sense... Or the ultimate hiss/boo factor of this age range, MORALS!

OMFGWTFOMGWTFBBQ! WE'RE ALL GONNA DIE HERE! NO! MORALS! AAAH!

-Phrase often said when 'the last one' tells exactly why he's managed to stay clean while everyone else is happily abusing themselves till they get Erectile Dysfunction at 17-

by TanonX December 28, 2005

One Deage

Sex Act: Powerfully ejaculating all of you semen in one shot into the partner's face

Friend #1 so how was that one night stand with Morgan
#2 Awesome I One Deaged her so hard she got a black eye
#1 Dayumn

by ThatOnKid January 7, 2015