Then, around 11:45 PM, I went to inform them that it was almost midnight, and that they should probably get some sleep. That's when they told me that they had a plan.
The *official* sleepover plan was to stay awake until 1 AM, and then sleep for exactly six hours, and then wake up and continue on with the fun and games.
And that's exactly what they did. They must have set an alarm, or something, and I couldn't believe it when they woke up at 7 AM the next morning.
But, by 5:30 PM that afternoon, after their friend had finally gone home, they were both done.
They slept on the couch until about 10:00 PM, when I finally moved them to their beds, where they stayed until the regular time the next morning.
Well, who is gonna play with me now?