come out the bag
v. to pull a gun. A slangdown of "come out of the bag on;" derived from the fact that guns were sometimes carried in paper bags for purposes of concealment.
That chickenhead swung on Serena and Serena came out the bag on her.
He got hemmed up by five dudes and none of his boys were around, so he had to come out the bag.
He got hemmed up by five dudes and none of his boys were around, so he had to come out the bag.