The Nice Magic Kingdom

THEY said there were animals
in the Magic Kingdom.
But there were no animals there,
THEY were in the Animal Kingdom!
So THEY had to go
in their car.
And instead of going to the Magic Kingdom,
THEY drove all the way to the Animal Kingdom.
But THEY really didn't want to go there,
so THEY drove all the way to Sea World.
But THEY didn't really want to go there either,
so THEY drove back to the Magic Kingdom.
But then it was night,
and no one was was there.
So THEY tried all the rides,
cause practice makes perfect.
And THEY rode all the rides
again, and again, and again.
So who was this THEY?
The Baby Monsters of course.