A negative term used by straight couples looking to save their dying relationship by searching for a third for a threesome.

Called a “unicorn” as it’s rare anyone would be willing to subject themselves to that volatile mess they call a relationship.

Unlike an open relationship or a polyamourous relationship, which can be used to positively describe a relationship involving romantically and/or sexually more than two people, a unicorn is someone who will be used by the couple who don’t care about what happens to the third in the slightest.

If someone asks you to be their unicorn, RUN!
“Did you hear? Stacy and Mark went looking on Tinder for a woman to be their unicorn!”
“Why?”
“Because this is the fourth time Stacy caught him cheating and is desperately looking for something to save their relationship.”
“Do you think it’ll work?”
“Hell no!”
by Peculiar-Person September 28, 2020
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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 25, 2015
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A creature that poops rainbows, barfs glitter, bleeds happiness, can take you on a magical adventure, and has meat that tastes like sprinkles.
My pet Unicorn loves to party!
by SuperCat113 October 5, 2011
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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.
by Yankee Cranker February 6, 2015
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A theoretical person of either gender in any context whose qualities are so idealized that it precludes their existence. Someone who is literally too good to be true.
Amy: "I've been on seventy four dates in three months and I haven't met any quality guys yet!"
Bob: "Guys? Sounds like you're trying to date a unicorn!"
by RogueEconomist July 20, 2015
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A pretty girl or woman that loves comic books, sci-fi and gaming. They're out there, but it's impossible to catch one.
"Look at the unicorn buying the X-Men comics"
by Bubble Shoot October 25, 2011
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A person you know that is your perfect match, and you could always picture yourself being with them...but you can't have them, or have never dated them, or they have kept you in the friend zone.
Remember my best friend Jimmy Jackson from high school? He is totally my unicorn.
by alexa7590 October 3, 2008
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