B-MAG is literally any kind Adjective, or Pronoun. Like when you describe someone or something, or when you call someone a good or bad name.
So feel free to use it how ever you would like.
Look at that sloppy B-MAG. (Drunk)
What the B-MAG is going on here!?! (F**K, H**L, ETC)
What a B-MAG? (F*G, B***H, ETC.)
Wow! Did you see that B-MAG car drive by? (Sweet, Awesome, Cool, ETC.)