Bert: "ERNIE!!! Oh Ernie, That is no good. You cannot count fire engines. That is too loud. You will wake up the whole neighborhood. Now, I want to count something quiet to fall alsleep with, Okay. None of those sounds."
Ernie: "Okay, Bert. How about if I count balloons."
Ernie: "Yeah, Balloons. They are queit. They just sit there."