A way to describe someone who has some quality that makes them sexually irresistible, and who doesn't have some quality that would make having sex with them questionable. It's someone who you wouldn't mind having sex with right then, right there, because of some reason. You don't have to be smokin' hot
to be bangable. It can be looks, or intangible qualities like personality or charisma.
He'd be bangable if he wasn't in a frat.
She'd be bangable if she didn't have herpagonosyphilaids
I don't know why, but he's just bangable!