CATastrophe

One of these things is not like the others,
One of these things just doesn't belong,
Can you tell which thing is not like the others
By the time I finish my song?

Three of these things belong together
Three of these things are kind of the same
Can you guess which one of these doesn't belong here?
Now it's time to play our game.

It's never a dull moment with the kids next door.