look up any word, like ratchet:
 
1.
synthetically or semisynthetically created drugs that are used rereationally. basically man made drugs created in a laboratory or some clandestine drug lab.

examples include lsd, mdma(ecstacy), methamphetamine, heroin, pcp, ketamine, several research chemicals (2ci, 2cb, 2ct7, DOM, DOB, DOI, 4-HO-DiPT, DiPT, 4-HO-mipt, several pcp analogues including pcc, pce, tcp, just to name a few), and finally various pharmaceutical drugs such as dxm, benzodiazepines, and various synthetic opiods including fentanyl, hydromorphone, oxymorphone, hydrocodone etc.
I quit using chems a long time ago. Now all i do is smoke weed, and indulge in the occasional mushroom trip.
by psychonautical October 15, 2006
 
2.
short for chemistry.
I have a chem lab in an hour.
by ShannonM September 09, 2005
 
3.
Awesome, cool, or better than great
Dude, that is so chem.

Negative form: chemless
ex. You're chemless, man.
by a techie March 25, 2006
 
4.
Council Housing Estate Mum
Look at the state of that C.H.E.M
by Yasta October 11, 2006
 
5.
Naming something that is difficult.
This class is so chem.
Jeez, that was so chem.
by Ac3St4rz January 14, 2011
 
6.
the pasty gunk in the crevice of your ass when you do not shower for a few days

I scratched my ass, and there was chem on my fingers.

Go drink a bottel of chem you stupid asswipe.

by Kayla Thy Great January 09, 2007
 
7.
a homosexual from empo who doen't like to drink
That guy is suck a chem. i can't believe he doen't drink.
by Cody Andrus March 24, 2005