Local to Oakville, Ont. this word is used to describe Cocaine, the substance otherwise known as, Yeo, Johnny, Tony, Yeahaaws, Whites and the list just goes on.
"Sweet lady Chach"
"Dude, you're chached take it easy with the... Chach?"
"Wowza's, thats a lot of Chach"
"Sweep the floors and do some dishes and you shall get your chach"
"Cocaine eh? I'm calling the cops!" (and thats when the fun ended)