chemicalbrother 

possibly the most braindead species on the planet

Illiterate gumby

chem: I am not Billy. I am chemicalbrother.

you: Fuck up Billy

chemicalbrother by reptiles July 24, 2008

Chemical Brother 

A close friend with whom you take mind altering substances. This frienship is often strenghtened by a strong psychic connection, caused by hallucinogenic and euphoric drugs.
a.k.a. "Drug Buddy"

When I was having a bad trip, My chemical brother John came along and helped me relax.

Chemical Brother by CRWK April 5, 2006