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."
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!
Ultimaxtreme is a portmanteau of the wordsultimate, maximum, and extreme. It generally refers to something that is so awesome that a single word cannot define it.