Unicronian 

Consisting of incomprehensible mass or quantity, in reference to the size of Unicron a prodigiously large robot whose scale reaches planetary proportions, and retains the ability to transform into a mechanical planet.

I busted a Unicronian nut and afterward required a long nap.

Unicronian by Monsterhaus February 5, 2010

Unicronical Engineering 

The discipline of engineering devoted to the creation and maintenance of planet devouring transforming robots.

"What type of Eng are you in Steve?"
"Unicronical Engineering"
"Why's that?"
"Well, I mean, if I wanted to be a pussy, I GUESS I could go into mechanical, but I'm not."

Unicronical Engineering by Sandwich_Hata November 8, 2008

Unicorning 

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.

Unicorning by Diamond Cutter (Pres) January 20, 2005

unicornia 

A place where all the unicorns come from
They stay hidden from humans just like mermaids

I wish I could go to unicornia

unicornia by jasontheawesome March 2, 2015

Unicorning 

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.

Unicorning by KPUSF January 16, 2014

Unicorning 

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

Unicorning by Doctor_chang.aka.hung-lo January 9, 2014

Unicorning 

A unicorn orgasm is like the greatest orgasm ever. Your body/parts of your body go numb. You have muscle spasms that last longer than the sex. It lasts longer than your average joe or orgasms and you don't think it'll ever stop. It's almost like you black out and go to a different world for that period of time. Sometimes you cry after. Your whole body is tense and relaxed at the same time. And you feel like a teenager again because you don't want to stop. It's. That. Good.

If you're not unicorning , then your partner needs to learn sex .

Unicorning by Unicorning July 20, 2017