To stick an enemy in Halo 3 with a spike grenade so that it sticks out of their head giving them the appearance of a unicorn.
by MNetLucas November 2, 2008

by sueeey June 17, 2013

Wearing a rubber mask and posing in front of national monuments, cruising through inappropriate venues (funerals, banks, day care centers), dancing at musical festivals, sight-seeing, doing tourist stuff and also everyday things like going to Costco to get samples of food.
Unicorns unicorn unicorn armyunicorning extremeunicorningunicornheadunicornmaskunicorns4lifeUnicorning4lifeTheUnicornArmyunicornarmy
by TheUnicornArmy September 6, 2013

by hey i have crippling depressio May 8, 2018

the best things in the universe pink fluffy glittery magical farts cotton candy barfs rainbows and awesome
by Glitter ✨ girl January 2, 2018

A situation that is so unique as to not likely happen or occur again. Originates from ancient Indus Valley culture. Made popular in modern culture by boy-bands that show no talent but make lots of money.
Man 1: "Bob, I bet didn't get permission from the wife to play golf this weekend."
Man 2: " I won the argument with my wife. She caved. I'm going."
Man 1: Damn. How did you do that? You won the argument with her? No man has ever said that before. The unicornity of it all.
Man 2: " I won the argument with my wife. She caved. I'm going."
Man 1: Damn. How did you do that? You won the argument with her? No man has ever said that before. The unicornity of it all.
by Captain Moonlight December 15, 2020

Taking a shit in a Pringles can and sticking it to someone's windshield of their car. (Making their car a unicorn)
We bough a bunch cans of Pringles and once they were gone were went around Unicorning every car in the parking lot.
by HelenKellerxxx May 14, 2016
