In swinger lingo, a single female (often bi) sought after by many couples. They are thought to be so rare that they have attained the status of mythical creatures.

A sexually empowered transsexual woman (male-to-female) that still has her penis. A rare mystical creature only rumored to exist but highly sought after.

They are desired by straight men who enjoy anal sex, lesbian women who enjoy vaginal intercourse and homosexual men that more identify as queer than gay.

They are further made in short supply due to their own body issues affecting sexual confidence and societal pressure to have full genital surgery.

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 b...

1. (positive)
Your dream person. Your perfect person. The person to whom you wish to be with intimately more than anyone else. This person is characterized by the following statements and application rational.
Statements:
The unicorn is a rare mythological creature:
They have healing powers and can neutralize poison:
Rational:
Despite its rarity, everyone has a unicorn. But everyone’s unicorn is rare to them. This one person can sooth your soul and give you a sense of worth or completeness. Just the thought of this person can heal your innermost pain on the darkest of days. It’s the perfect person.

2. (negative)
The unreachable love. Too good to be true because her unicorn status is superficial. Because most unicorns are rare and out of touch, the truth of the unicorn is likely askew. Beauty is exaggerated and faults and other unattractive attributes are forgotten or discounted. It’s your true love…Mr. Right… dream girl… and endless pursuit of this unicorn can only lead to disappointment.

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.

A creature that poops rainbows, barfs glitter, bleeds happiness, can take you on a magical adventure, and has meat that tastes like sprinkles.

A sexual position in which a strap on dildo is attached to someones head(male or female). After it is tightly strapped and secure, they get on all fours and ram the dildo up someone's vagina, or butthole(which works for male or female). But to be a real unicorn, the person with the strap on must make angry and wild horse noises while shoving the dildo up a persons vagina/butthole. Also, the person on the recieving end of the unicorn can sometimes where a horse-back riding helmet and use a whip to make the person "heading" their vagina/butthole go harder. An experienced unicorner wheres fairy wings on their back along with the dildo on their head.

1.A mythological creature that resembles a horse with a horn only in stationary appearance. In movement s/he is faster than a cheetah, more graceful than a deer. In order to outrun a hunter, the unicorn need only lope.
2.A creature that cannot be captured, cannot be held.