Bam Margera is a proskater well known for his pranks in Jackass and Viva La Bam. He also managed to destroy the image of some very talented bands such as HIM and Cky.
We call BAMTARDS all the idiot/retarded loyal followers who believe Bam created these bands or owns them for that matter. A bamtard will love HIM, Cky and will worship the heartagram (that he will call the bamagram) without even knowing what it stands for. (Bam unfortunately is a huge self-centered copycat- he was copying jackass' jhnny knoxville and now is copying his style from finnish rockstar Ville Valo). Some bamtards actually attend shows only in the hope of cathing him over there.... A bamtard loves Bam either because he is SO cool or SO very hot) and wishes he could either become him or marry him.