To put up a shelf and, upon relative completion, have parts of the shelf remaining, whereupon they are put in to a jar. Over time the jar becomes the repository for remaining shelf bits.
Barry: "Why do you have a jar full of screws and stuff?"
Henrietta: "Unicorning"
Barry: "Oh right, yeah, I've got a unicorning jar myself"
Henrietta: "All your jar are belong to us"
Barry: *Haggard gasping for breath"

Eric swung the gossamer blade in a vicious arc, severing the bonds binding them. The unicorning was almost complete, time seeped away, tendrils of acrid smoke rose from the tower. The dread lord Peter had been unicorning for years, and had perfected his unicorning to an art.
by A Nighthawks Odd Term March 04, 2012
Strapping a dildo to your head and charging full throttle and drilling the recipient in the vagina or anus.
We unicorned until the sun came up.
by Diamond Cutter (Pres) January 20, 2005
going into a fast food place and getting a ice-cream cone then smashing it on your forhead then walking out
walker barnett went too chickfilla and smashed a ice-cone on his forhead

as his died friends died watching him go unicorning
by the unicornerererr September 05, 2011
The act of running around naked with an erection.
This guy got so drunk last night, i saw him unicorning through the street!
by Unicorners August 18, 2011
Its when you place a hard penis on someones forehead. The balls will also be resting on their head. It resembles a unicorn. Placing a soft penis on someones head is baby unicorning. And if this takes place in a pool or water it is known as narwhaling.
During a party you find a passed out person and place your hard dick on their forehead, balls at the base of the forehead, this is known as unicorning.
by KPUSF January 16, 2014
Unicorn is commonly used in the CAL forums to censor the word fuck.
ORIGINAL - bchillz is a fucking idiot
CENSOR - bchillz is a unicorning idiot
by kezboard June 04, 2007
Go to a fast food place like maccas, order a soft serve cone then ask the person if the believe in unicorns and stick the cone on your forhead saying believe(best done in the drive thru)
jack and bob when unicorning at maccas
by cheese&crackers September 27, 2012
A sexual theatrical play where one partner attaches a strap on dildo and proceeds to penetrate the receiving partner with said dildo strap on.
Buddy: how was the white knuckler last night?
Me: she was into some wierd shit. I had to put a strap on my head, unicorning the fuck out of her
by Doctor_chang.aka.hung-lo January 09, 2014

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