is "gangbang" one word or two?

One of my favorite interactions with my mom. ever.


me: "i called charter because they charged me for ordering "10 Best Gangbangs" on Tuesday at 2pm...which i clearly didn't do...and they wouldn't take it off my bill"

mom: "how much was it?"

me: "$14.99"

mom: "PER gangbang?!?!"