In grade school, I was involved with a group of girls who were really into sleepovers. They were big social events and a lot of fun, involving séances, Truth or Dare, telling urban horror stories, etc. So I was devastated when I was ostracized from the group after I skipped 6th grade. (Keller's speech in last night's SGA episode obviously helped bring back this memory!)

I eventually did get to participate in sleepovers again, though—as an adult. I was the sound technician for a folk dance performing group which traveled to various venues (schools, community theaters, etc.) to perform. If the venue was far away, we usually crashed for the night in either a gym or a motel. Gyms were best, though, since you could have one hell of a party in them, complete with live music, dancing, and (usually) a basketball game.

Edited to fix HTML tagging