Why is it called a "sleep"over when nobody sleeps?

Sat. night Hannah had 3 friends over for a sleepover. It started at 6pm with pizza. They had the basement to roam. I had a meat and cheese tray and veggie tray for them to snack on along with chips and soda. I did peel off face masks with cucumbers on the eyes and painted their toes and fingernails. When it was time to go to bed, that was a different story. In and out of the room, up and down the stairs. Hunter woke up from them talking and making noise at 1:15am. I hadn't fallen asleep yet. I tucked him back in and he proceeded to come into our room 3 other times complaining of the loud bangs and noises. Finally at 3:00am he fell alsleep for the night. I on the other hand hadn't fallen asleep yet. The girls were finally quiet and sleeping at 2:30am. Ryan was up at 7:00am for work and I was then awake and up also. I made the girls breakfast and 2 had to leave by 8:50am. I had to wake them up to leave. Needless to say, it was a long night, but the girls had a very fun time. I am not sure we will be having a "sleepover" party any time soon again. Normally at our house it is a 9:00pm bedtime on weekends. This was just a little to hard on all involved.