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A final, uncompromising demand for anal intercourse issued by a boyfriend or girlfriend to a boyfriend or girlfriend, the rejection of which leads to a severance of relations.
Boyfriend: "It has been three years and alls I wants is to snake on up there. In and out. Real quick like."

Girlfriend: "There is no way I am letting you ass fuck me. Fuck your own ass or shit on your hand and whack off!"

Boyfriend: "I didn't want it to have to come to this but you have left me no alternative. I am issuing you an ultimanal - either we have anal sex or it is over."

Girlfriend: "Fine."
Ultimanal by D-balm May 23, 2008

ultimeatum

Burger that is seen in Regular Show episode "The Best Burger in the World" It consists of a cheeseburger stuffed inside a cheeseburger with deep fried cheeseburgers for buns that is then topped off with Himalayan ketchup. It is only served at the Grill 'Em Up truck once every 100 years and is only made by the truck's head chef Ajay Maldonaldo.
I heard if you ask for the ultimeatum Idaho style, they put a whole bag of chips in it!
ultimeatum by XANthonyfantano August 14, 2017

ultimatt 

a term given to those named
Matthew, combining the terms
matthew and ultimate
therefore ULTIMATT, sometimes
spelt with an "!" instead of an "i"
'Matthew Joson is the first ultimatt/ult!matt'

'http://www.myspace.com/ultimatt_v2'
ultimatt by u l t ! m a t t January 4, 2009

UltimaDargon 

A Man Who Makes Great GFX's
XeroCreative
UltimaDargon Pwnz j00
All your b4s3 belongs to him
Ph34r!!! ;[!!!
UltimaDargon by Death April 23, 2005

ultimaxtreme 

Ultimaxtreme is a portmanteau of the words ultimate, maximum, and extreme. It generally refers to something that is so awesome that a single word cannot define it.
Person: "man chuck norris is so ultimaxtreme!"
ultimaxtreme by Andruth September 22, 2007

ultimatatum 

The same thing as an ultimatum when you are editing a Dear Abby article at 3:00 AM.
Dear Abby: My boyfriend gave me an ultimatatum.
ultimatatum by Mr CPE March 31, 2023