look up any word, like half chub:
 
1.
Slang word used for mix of water, heroine and light among drug addicts.
It's a way to use tar heroin mixed with water and heated with lighter. Used as alternative to sniffing powder/IVing H.
This mix, when snorted will lead to horrible pain in your sinus and skull and feeling of high afterwards.
-Hey I copped some H. what should we do?
-Let's do some monkey water!
by 1010110110 February 14, 2013
 
2.
loose change used for frivolous purposes.
monkey water is used for drinking, gambling, loose women, and the like.
by total man December 30, 2011