Screw-Nicorn 

A made up sexual act which involves Partner A wearing a strap on dildo on their forehead and then proceeds to have intercourse using said dildo with Parter B. This was referenced in a Most Offensive Video Over-Dub of a Charlie Brown and Peanuts cartoon.

"We're going to do the Screw-Nicorn trick. That's when I put a dildo on my head and fuck Marcy headfirst like a Unicorn on amphetamines."

Screw-Nicorn by Bubonic_Chronic November 21, 2007

screwnicorn

When two raging lesbians get naked and strap dildos to their foreheads, they get down on all fours and crawl around trying to penetrate each other.

My lesbian roommate tried playing screwnicorns and ended up finding out she likes anal.

screwnicorn by zwicks December 16, 2004

the screwicorn 

When a dyke puts her strap-on dildo on her forehead and proceeds to go at her partner like a crazed unicorn.

April really enjoyed receiving the screwicorn from Jess last night!

the screwicorn by womanizer April 12, 2004

screwnicornhole 

v. to strap a dildo to your head (like the horn of a unicorn) and to screw someone IN THE ASS (the cornhole)

Jim screwnicornholed Patsy up against the front door until she was screaming like a banshee.

After screwnicornholing Michael, Dawn had to wash the fudge and corn off of her headgear.

screwnicornhole by masochistmonkeyjoe July 12, 2007

screwnicorn

1. (noun) a lesbian with a dildo strapped to her forehead

2. (verb) to penetrate another with a dildo strapped to ones forehead, like a crazed unicorn.

3. (verb) to battle a rival lesbian to near death by clashing forehead dildos in a stag-like manner.

1. The screwnicorn winced as her dildo hit the doorframe.
2. The whiplash injury was a result of a drunken screwnicorn.
3. The angry girls had a screwnicorn over the hot chick.

screwnicorn by CeltGal April 10, 2007

screwnicorning 

1. to penetrate another with a dildo strapped to ones forehead, like a crazed unicorn.

2. to battle a rival lesbian to near death by clashing forehead dildos in a stag-like manner.

1. The whiplash injury was a result of drunken screwnicorning.
2. The angry girls were screwnicorning over the hot chick.

screwnicorning by CeltGal April 11, 2007

Screwnicorn Trick 

When you strap a dildo on your forehead and then fuck your girl with it, like a unicorn on amphetamines

Got so fucked up last night, I gave my girl the screwnicorn trick.

Screwnicorn Trick by bussdat November 10, 2010