The kids have been playing a game, inspired by a summer TV show. It is a somewhat modified version, but I think you will be able to guess which one it is.
This is what they do: they put on capes or costumes of some kind, they zip around the house (or "fly") and then they rate each other: "Great job, A! You get a ticket to Vegas!" "Very good, BR, but remember your toes! You get 20 cookies!"
or, my personal favorite: "That was SO good! You get 100 tickets to Vegas!"