An informal and usually non-romantic gathering of two or more people where it is clearly understood that you are being invited to come over for socializing and to have sex.
I exchanged numbers with that hot guy Alec I met at the club 2 weeks ago. We've been talking and even though I don't see him as boyfriend material because he's kind of dumb but. I do think he's too hot not to have sex with. So, I've invited him over Friday night for a Hang and Bang. I'm hoping you'll want join us.
A suspended or inverted rollercoaster (especially a Vekoma Invertigo or SLC model) that is badly engineered, causing headbanging on the shoulder restraints.
"My ears hurt!"
"Well, that'll teach you not to ride Hang and Bangs, won't it?"
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.