1 definition by topher730
A mythical creature, typically one you meet out and get along with perfectly, your ideal, yet fail to get a number from. And without a moments notice they are gone.
You: Damn, that girl/guy was everything I am looking for.
Friend: Why didn't you their number?
You: They left before I had a chance, I swear it was a Unicorn!
Friend: Why didn't you their number?
You: They left before I had a chance, I swear it was a Unicorn!
by topher730 November 10, 2014