sickhead 

comes from the south west of London around the Wimbledon area... meaning a person is crazy or sick in the head to do such and obscene thing

-"allow jumping over that barbed wire fence, you sickhead" ... cops are comming

sickhead by Jon July 7, 2004

sickhead 

When someone does something cool or crazy they are a sickhead.

Brody runs onto private farming land and getts the farmer to chase him with his shotgun for trespassing. In this situation Brody is a sickhead.

sickhead by Finn'Shizzle September 10, 2006

sickhead 

someone who is really good at something

I'm a sickhead at dancing

sickhead by dark phoenix90 December 11, 2006

sickhead 

somebody who is sick at something. a sickhead could be an extremely violent person, or a stunt performer, a joker of all levels. the jack in the pack, the sickhead of the group will be popular providing he continues to be a sickhead.

"did you see those brutal sickheads in the pit?"
if you do that you are a fucking sickhead.

sickhead by scaripumpkin December 28, 2005

sickhead 

crazy person. taking craziness to the extreme, someone who doesn't give a sh!t, on one, trippin out, name given to some1 differeciating the norm! not all there! origionates in manchester england!

look at that guy it that fight over hes goin crazy/ sick what a sickhead1

sickhead by ste norbury April 15, 2006

Slickhead

Another variation of the common phrase "Dickhead" but a little more offensive to a Philly native... commonly used in Northeast Philadelphia, and Bucks County...

"Hey you know that boul Joey?"
"Yeah I know that boul, he a whole dickhead"
"Nawl dawg, he a SLICKHEAD ass nigga"

Slickhead by Slickhead January 10, 2015

slickhead

a retard

that was so stupid why would you do that slickhead

slickhead by a-dollaz June 16, 2012