There was one sleepover last summer where we reckoned we would go to bed after the Shipping forecast at 12:45. Then we watched the entire fifth series of Blackadder, played another game of Mario Kart and only went to bed after the 5:30am one.
The sleepovers at my house have involved sausage fights, a broken light caused by an inflatable plastic eyeball, playing with a meths burner and then making our our "Trashangias" from Pepsi cans.
Goodness why they're called sleepovers, you barely sleep anyway.