Pulling a fast one.

Last night "Uncle" Nate (actually a cousin) watched us. We're not sure what it means, but mom says we pulled a fast one on him. All we did was tell Nate that there were lions under our bed and we needed to sleep with the lights on. When Dad got home at 10:30 we were still awake and were going potty for about the 10th time since Nate put us to bed. Would you call that a fast one?
Thanks for the fun Uncle Nate! Can you come watch us more often?