My sleepovers:
Friend: You wanna make some sculptures like these with me?
Me: yeah, how do they stick together?
Friend: you lick them
Me: HECK YES
Friend: let's talk about dragons, a random planet we just made up, smart things, and other weird stuff while we're at it
Me: you had me at licking sculptures.
(Then we take about weird stuff and do weird stuff and act weird and have a blast until the end of the sleepover)