JnB stand for Juice n Bun, as in drinking and smoking. A group of young teenagers from Markham thought of the name so it would be easier and censored incase others or even adults were listening to a conversation. JnB will soon be a trademarked company and will have their own clothing line. JnB has been and will be the newest way for all youths to say drinking and smoking without getting caught. JnB, it is what it is...
"Yo its friday waddu saying tonight?"
'You down for JnB?'
"Seen, let everyone know jnb is going down tonight"