Skullinite 

Skullinite is a follower of the skulls. A skullinite will cover his motorcycle with skulls located in any place possible. A skullinte will also tattoo his or herself in skulls and any place that they find desirable such as a skull on their truck antenna or garments.
A skullinite may be afflicted with skulliosis.

Wow dude, that chick covered in skull tattoos has got to be a skullinite

Skullinite by Recycled Roadkill May 24, 2009

skullulite 

folds of fat found on the heads of obese bald men

His skullulite was so bad that I thought his brain was exposed

skullulite by Michael February 27, 2004