a mythical male creature who is successful (read: pursuing his passion and can pay his electric bills/rent), funny, chivalrous, masculine (read: not chauvinistic), adventurous, artistic (read: not suicidal).
See any John Cusack film (or Chuck Klosterman's witty commentary on Fake Love in Sex, Drugs and Cocoa Pops), any romantic comedy where the flawed guy comes through in the end...

"Where is my manicorn? I keep going out with all these losers!"

"Too bad I settled when I got married, I just met my manicorn."
by B&E April 8, 2007
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The elusive perfect male. He can be found at bars, but not singing karaoke drunk while making out with your best friend. He is sensitive to your needs and is a caring man who will put your needs first. He will talk about feelings with you and will never cheat on you ever.
Sean is my manicorn, he is sensitive and caring, he makes me dinner and then we talk about our feelings while watching a romantic comedy and crying at the really happy or sad parts.
by Elisabunny February 22, 2010
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A mythical human male with the largest, most beautiful cock in the world. Very shy.
I was hoping to meet a manicorn at the bar last night, but all I got was a li'l naner.
by the_mumbler February 6, 2010
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A sexually inaccessible male. Some manicorns flaunt themselves in front of you and brag about how they're not getting any even though you've offered so many times they always have an excuse why it's not a good time.
That TD is such a manicorn. He always talks about not getting laid but if you offer he makes up a reason why it's not a good time.
by ManicornHunter July 28, 2012
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A half-man, half-beast creature, with an unholy horn on his head. On 420, Todd discovers that its just a gay biker named Carl.
The manicorn only shows up in the most holy turnip patch on 420.
by reslived October 5, 2008
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A manicorn is like a black hole of hate. the dirty rotten moist hole of 5 dollar whores in Nevada. That sort of hole. A manicorn is a man so filled with this unholy of holy hate that through out his early stages in life as a man very much so similar to the pupae stage in most insects this hate festers. Then through metamorphisis he emerges from a blanket of distrust and mean mean words one morning. He is then a manicorn!!! This new manicorn looks very much so like an every day normal guy however he has a slight horn on is forehead. It is in this horn that ALL the hate that was collected by that filthy hole are brought together. It is here in this horn ... that hate lazers exist. BEWARE OF THE MANICORN!!!
Sarah: OMG hey william hows your day going? It seems you just evolved into a manicorn! COOL!"

William: FUCKING BLOODY PUSSY FART DIEEEEE!!!! *emits hate lazer and blows poor sarah's head off*
by H3br3wHamm3r September 22, 2011
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Man bun worn at the front of the head, just above the forehead. Resembles a unicorn horn.
by Klabanator May 22, 2018
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