Methitis

This is a person who is doing meth with so many people, that there spreading the drug around like it's a disease

Hey, my grandpa said don't come over if your tweaking, because he don't want our family getting that methitis again.

Shardstar

A person that is real shiny, and greasy from all the meth they been doing.

Look at that shiny shardstar cleaning his yard in this hot ass weather.