Abbreviation for "Don't Be a Jack." Similiar words/ phrases: Don't be a loser, don't be a puss, don't be a moron, sack-up, get a life, don't be an ass. Can also be used after a joke bombs or when something genuinely stupid is done.
What do you mean you didn't call her? Dude, D.B.A.J., just do it.
Why did the chicken cross the road?
Shutup, D.B.A.J.
Why did the chicken cross the road?
Shutup, D.B.A.J.
by hillary_cali September 7, 2005
Get the D.B.A.J.mug.