chucknorrisium 

chucknorrisium is an element with an unlimited atomic number and atomic mass. This element has only been theorised because if anyone gets close to it, they get knocked back by a roundhouse kick to the face. Chucknorrisuim is theorised that once harnessed into a solid form it will be unbreakable, and makes anything it is attached to unbreakable. This is because the universe makes sure it cannot be broken or it will get a roundhouse kick to the face. It is belived that chuck norris originated from the first chucknorrisium atom.

"ZOMG I nearly found a chucknorrisium atom, but my microscope got destroyed"

chucknorrisium by Sheepy123 September 30, 2009

Chucknorrisaurus 

It is a common misconception that a giant meteor or comet-tail caused the Ice Age and the ensuing demise of all prehistoric life.
It was, in fact the appearance of a new type of dinosaur called the Chucknorrisaurus that suddenly appeared and wiped out all animal life. Scientists in Asia discovered a single fossil surrounded by a wealth of other skeletal remains, each with their craniums smashed to dust. The theory is that the dreaded Chucknorrisaurus was enjoying a meal, when it was interrupted by another dinosaur...mistake #1. Chucknorrisaurus was so angered by the intrusion that it snapped and started delivering roundhouse kicks to everything in sight. Other dinosaurs heard the commotion and came to investigate....mistake#2. The ensuing brawl ended up with every dinosaur dying in a hail of kicks, and their final breaths raised the CO2 levels to the point of creating a greenhouse effect and starting the Ice Age. This ice age only served to preserve the Chucknorrisaurus's DNA which combined with [Simian} DNA and resulted in the creation of man.

" The Tyrranosaur looked mean, but those tiny little arms were no match for the powerful legs and death-dealing stare of the Chucknorrisaurus "

Chucknorrisaurus by the Den of Iniquity November 20, 2006

chucknorrisuarisrex 

The reason the dinosuars went extinct. Widely believed to be the biggest land animal of all time

"RUN A chucknorrisuarisrex"!

chucknorrisuarisrex by roflcoptor October 1, 2007

Chucknorrisitis

condition of having two y-chromosomes, resulting in excessive manliness

That lumberjack-hunter-construction worker was born with chucknorrisitis

Chucknorrisitis by Paully Dizzle December 16, 2010