Teenicorn 

A manicorn that is still growing up, thus called a teenicorn. Prime examples of teenicorns are characters portrayed by Michael Cera. Other such examples are Keith (Eric Stoltz) from "Some Kind of Wonderful", Jake Ryan (Michael Schoeffling) from "Sixteen Candles", and Chris (River Phoenix) from "Stand By Me".

girl 1: Have you seen "Pretty in Pink?"
girl 2: Yes! Blaine is a total teenicorn!

Teenicorn by Vamptastic February 21, 2009

Teencore 

A sub-genre of music combining sounds of Teen-pop with goth, metal, or dark styles of rock. Written by writers usually in their late teens or early twenties, and is marketed toward teenagers, in turn, often appearing on MTV, Fuse, or VH1. Not to be confused with Emo(but may both attribute to an Artist), Lyrical themes consist of overly-dramatizations of lovers or overly-dramatic hate towards ex-lovers meant to be profound yet simple enough for the average teenager to apprehend. Musical themes often consist of a slow beat and vocals then suddenly a fast paced climax with catchy beats.

Most popular examples of bands incorporating the teencore sound include Fall Out Boy, My Chemical Romance, and Panic! at the Disco.

Teencore by MetricMars July 5, 2007

Twonicorn 

When a unicorn is born with a mutant deficiency that adds an extra horn to its head, thus becoming a two horned unicorn, or twonicorn.

Person 1: I saw a unicorn today!

Person 2: Even better, I saw a twonicorn!

Person 1: What's a twonicorn?

Person 2: A unicorn with two horns.

Person 1: lol

Twonicorn by Gurgal February 25, 2010

Peenicorn 

A mythological creature, with the body of a horse and horn of a penis.

The Leprechaun wanted to play leap frog with the peenicorn.

Peenicorn by Drea, Chayle, Lauren June 30, 2007

twonicorn 

Twonicorns are mystical creatures similar to unicorns, but with two horns (hence the TWOnicorn bit). They are, however, entirely their own species. Twonicorns are quite shy by nature and are so few that many people do not believe in their existence. This may also be due to the fact that that they reside in the countryside in carefully kept holes in the ground, out of the sight of prying human eyes. These holes are where they hoard any sparkly items they find and host the most magnificent tea parties.

Person 1 (singing): BUT AS SURE AS YOU'RE BORN, DON'T YOU FORGET THE UNICORN.

Person 2: What about twonicorns?

Person 1: Twonicorns? Twonicorns don't exist!

Person 2: Yes they do, I had a tea party with one last week.

twonicorn by twonicornprincess May 14, 2012

Trinicorn 

A unicorn with three horns, in between Twonicorn and Quadricorn.

catherine: i like unicorns.

emma: i like TRINICORNS. pwned.

Trinicorn by dandylionstuff September 23, 2011

Teenior 

A senior citizen who does the exact actions a teenager does.

"I wish that Teenior would put that cell phone down & pay attention."

Teenior by SEGApwnsNintendo January 1, 2010