The context of the following conversation is Cameron was having a sleepover and it was time to go to bed. Cameron turned the lights off.:
Cameron says I'm getting tired.
The friend responds Why? It's so much fun!?.
Cameron responds I think I had my fill, I'm going to turn off the light.
The friend responds I think I'm getting tired too.
Cameron responds Let's call it a night, it's time to go to bed.
The friend responds Good night.