ultimoleo 

coolest guy on neopets. better than all dem fackers!

leo - short way of saying it

Guy: Dude, you wanna hang wit ultimoleo? You kidding?

Gal: He wouldn't wanna hang out with you hudooh!

ultimoleo by Jack June 12, 2004

ultimoradioregum 

(Latin)The final argument of the kings. War.

Latin is common.

ultimoradioregum by Larstait November 15, 2003

Ultimus Asteri 

Ultimus Asteri is a ROBLOX clan created by user Xransot, and co-owned by TotallyMainTrynda (goes by "Color") and CrypticDIO (Goes by Syther). They're themed around PVP and have over 300 members. They claim to be the best, considering you can only be accepted or invited into UA through your skill and intelligence. This is ironic, considering Syther is a bum.

This guy who's a god at Arsenal joined my game and then said that I should join Ultimus Asteri. Literally, everybody in this discord server is a god at Arsenal.

Ultimus Asteri by CarlisCroissant February 17, 2021

ultimo dragon 

The act of one male grabbing another male's penis and shaking vigorously while yelling ULTIMOOOOOO DRAGONNNNN!!!!!!

Dude Jim just totally Rick Flared me, he bagtagged me last week, I'll totally have to ultimo dragon him sometime.

ultimo dragon by Lickity Stiff January 29, 2009

ultimous 

Your name is MultiMouse

jUsT dOiNg ThAt QuIrKy tT tReNd WhErE yOu ReMoVe ThE fIrSt AnD lAsT lEtTeR oF yOuR nAmE

Stan Miraculous Ladybug

MultiMouse:I’d never abandon you tikki!

ultimous by Miraculous Dictionary May 24, 2021

UltimisMC 

A p2w Minecraft Server where people with cracked accounts Play.
Many of the stuff in the server is stolen from other servers

You cannot survive on UltimisMC without a rank that costs 100$

UltimisMC by 大麻 December 30, 2021

ultimo

a man, usually bald inserts his head into a ladies vagina

i got ultimoed last night
lips stinging a bit though

ultimo by pasa November 11, 2006