purple colored marijuana (usually green with blotches of purple). marijuana is sometimes grown differently to have a purple hue, usually more potent and sometimes more expensive. very common in northern california (bay area)
"we got purple, I GOT GRAAAPES"
"...purple in the swisher..."
(rap song)
-Federation featuring E-40
Friend:Hey want some Purple Ribena?
Me:Nah bro .The tag is labeled expire.you can drink it yourself
Friend:Suit yourself iam drinking it.I can't taste Shitye.