Unihorse (adj.) comes from the English words "unicorn" (meaning a creature who is called "mythical" by uneducated adults) and "horse" (meaning the mammal). By definition it simply means "cool". Unihorse is used to describe something that is "cool", "sick", "epic", "boss", and approved by teenagers.

An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.

you-na-whore-cess
n. Unihorses are an animal often found in a small country called Atlantica, which is located in the middle-east right underneath Turkey. They can be seen grazing in orange groves but, don't get too close, they may throw these tasty oranges at you. Only able to survive in the humid jungle of Atlantica, don't try to buy one on ebay, an often mistake made by n00bs. unihorses do not look like horses with a horn; they all are neon green very square. They can also speak hadfakecinkaceghaian which is the second hardest language in the world.