What is Bmj?
1.
An acronym for "Bhad Mein Jao" widely used by South Asians when they don't have any suitable response for something, means "Go To Hell." Or "Get The Fuck Over" in some cases.
boy: love me pliss.
girl: BMJ.
See
2.
Bird Man Junior, Lil weezy we need some water on the track fresh for all this flame
Bird Man Junior, get down stay down lay down an lie down bitch ass nigga