Green’s Dictionary of Slang

1. (US Und.) to rob; to steal.

1903		H. Hapgood Autobiog. of a Thief 45: I received my first lesson in the art of ‘banging a super,’ that is, stealing a watch by breaking the ring with the thumb and forefinger, and thus detaching it from the chain.
1904		Number 1500 Life In Sing Sing 258: Banging supers at the red wagon. Stealing watches at the ticket wagon.

2. (UK black) to obtain through fraud.

2021

Central Cee ‘Fraud’ 🎵 Was young, try bang an AC, I tried a ting and they blocked my card.