Someone who is very sexy and
pretty / handsome and is believed to be worthy of having sex with or 'banged' which resulted in the
slang word 'bangable'. A
person being called 'bangable' is therefore being told that the person want's to have sexual intercourse with them or 'bang' them.
*
girl walk's into bar who is very
beautiful*
man1: "wow, dude, look at that, she's fucking bangable!"
Man2: "I know dude, I'd bang her any
day of the week!"