What is Knock Back?
1.
to drink or go drinking
after the basketball game a few of my friends and i are going to knock back.
2.
The act of some one attempting to
Girl :Hey your really nice, you wanna go for a drink some time?
Boy :Err sorry not interested.
See
3.
To get a "Knock Back" from a club/pub
Not allowed in - knocked back
I just got a knock back from that bar
also see - K.B.ED
See