Top Definition
Colloquial; Synonym for hot bi babe or HBB, often derogatory, condescending, or ironic. A bisexual person, usually though not always female, who is willing to join an existing couple, often with the presumption that this person will date and become sexually involved with both members of that couple, and not demand anything or do anything which might cause problems or inconvenience to that couple.

The term is often used to be dismissive of a couple seen to be only superficially polyamorous. Because of the demands that this type of couple places on the woman (that she be single and not take on any additional partners, and become involved with both members of the couple equally, and often "complete" their family as a surrogate mother and housekeeper and/or breadwinner and not do anything that may threaten or disrupt the existing couple), many in the poly community call this type of woman a "unicorn", as in mythical and not likely to be found, even though there are plenty of bipoly women around.

Sometimes the unicorn is expected to not develop any emotional attachment and is strictly there for a sexual relationship (equally distributed to both members of the dyad) and/or is prescripted as a secondary. This term is used as a reminder that bipoly women are people with their own desires, needs, and pre-existing lives, and not fantasy figures or pets. See related prescriptive vs. descriptive.
John wants a single, attractive woman who will love and have sex equally with him and his wife, but not interfere with their marriage, move in together, help raise their kids but not have any of her own, and not have any other partners. He's looking for something that doesn't exist - he's looking for a unicorn!
by Joreth April 08, 2010
An acquaintance that you, yet not your friends, desire although you know little to nothing about him/her. The mythical and enigmatic reference pertains to your unfamiliarity with your person of desire and the reason for the attraction in the first place.
"I heard you went home with your unicorn last night!...yeah?"
by ISeeBoredPeople December 03, 2008
Cute fluffy creature with a magical cone on its head that farts rainbows.
"Oh, my gosh look at that fluffy unicorn! He's so fluffy, I'm gonna die!" -Agnes
by GTA_lover99 March 28, 2015
It's when you lay down flat on you back, face up, with a dildo suctioned to your forehead, and your partner squats down over your head, and inserts the dildo into one of their orafaces, then bounces up and down over you while singing The Irish Rovers, The Unicorn Song.
I was unicorned last night
by Yankee Cranker February 06, 2015
Unicorn - n. -

1. Mythical creature with the form of a horse and a single horn. They don't exist.

2. An empowered and confidant individual, usual female, who joins couples for activities, usually sexual, and/or dating.

To unicorn - v. -

1. The act of joining a couple for healthy, happy, mutually satisfying activities, usually sexual.
Laurie was a happy unicorn and loved to frolic with well-adjusted, healthy, sex-positive couples of all genders.
by Psychedelic Harry Too January 05, 2015
A strange and rare girl, rather mystical. A virgin girl in High School
Ohh man, she's a Unicorn, no way can I try that
by Eddie10 July 20, 2010
Sooo fluffy and cute,it gets all of your problems away, you can throw its poop at other people (only if you have some & people don't get mad if you throw it at them)
It has a horn and it poops rainbows. And farts them. It's all rainbows & cute stuff around them. You wanna cuddle it & take it home.
teacher: you have to write an essay in pair on some rare animal of your choice.
me&my bff: *looks at each other* MHM you thinking what Im thinking?? Well write about..... UNICORNSS!!!! *-*
by pizzaqueens January 16, 2015
A virgin.
"I was a unicorn in high school. I didn't lose my horn until I met your father."
by Pear's Megzo January 11, 2014

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