It's a game. Very popular at middle school parties.

[ Kate knew the chance of Johanna understanding that reference was slim to none, she just wanted to gauge the level of interest before explaining, trying not to put too much strain on this fragile relatively-good-ness by boring her. Actually being asked gets a quick flash of a grin, out of sight, not quite against Johanna's shoulder. ]

Everybody sits in a circle and you spin a bottle and whoever it points at, you get locked in a closet with them for seven minutes. You're supposed to make out but mostly it's just awkward and cramped and the people on the other side of the door tease you.