A marathon bong session where everyone brings their own stash. The last person left conscious wins the bongathon, and as a prize, gets to drink the bong water.
A girl good enough to have sex with but not good enough to date or have as a girlfriend. A girl you bang along the way untill find a girl good enough to be your girlfriend.
I sex with a bangalong I met in the bar last nite, her face wasn't much to look at but she had a banging body.