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The supreme leader of the satanist cults at the back of every classroom.
Cultist 1: Oh great On-On, what requireth you today?
On-On: I require 15 sacrifices of blood. Mwahahahahha!
On-On by A_Manwithhiv January 24, 2022
Just generally trippin', tweakin', weird, actin' a fool, blackin' out, goin' off. Not necessarily due to drugs, though that's the obvious reference.
Homie was on one, just buggin' like I shot his mom or something.
on one by Kuahmel January 23, 2009

five-on-one 

another definition for yankin your crank
My girlfriend wouldn't put out again so I had to go play some five-on-one.
five-on-one by Doyle November 14, 2003

five on one 

A slang word for male masturbation. It refers to your 5 finers on your penis, hence 5 on 1.
Hey man, i'm horny, i think i'm gonna go do a lil 5-on-1.
five on one by The Pimp February 3, 2003

Sneak up on one cheek 

To discreetly fart while in a crowded place.
"If I sneak up on one cheek, hopefully no one will hear me fart."
Sneak up on one cheek by creedmoor November 22, 2004

going off on one 

Idiom (UK), see go off on one. To launch into a rant or lengthy discussion about some pet subject.

Might be derived from "going off on a tangent", but has more of a connotation of annoyance.
Sorry for going off on one, but I really feel strongly about this.
going off on one by Cedders March 13, 2011
More from Urban Dictionary
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
NYC people who migrate north to Quahog, RI to see the leaves in the fall.
New York and everyone from there can fornicate themselves with an iron stick.
leafers by ss++ February 8, 2005
Word of the Day on September 27, 2026

Respectfully 

Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.

After school, The Modells on Jamaica Ave was active. Respectfully.
Respectfully by john quan the first December 20, 2020
Word of the Day on September 26, 2026

You met me at a very Chinese time in my life

A moment in time where you feel distinctly Chinese over all other things.
Dante: "I wish I could be Nigerian, but I can't because I'm Chinese. You met me at a very Chinese time in my life."
Word of the Day on September 25, 2026
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