班霸 can mean many things. It mostly refers to the super clubs in a soccer league. But in the context of the LMF song, it refers to the super bands of music world.
As regards to 牙炸 (which should be 掗拃), see this link in CantoDict: [www.cantonese.sheik.co.uk]
As regards to 牙炸 (which should be 掗拃), see this link in CantoDict: [www.cantonese.sheik.co.uk]