Phineas and Ferb2007

Candace:
Why are you going to the moon? Kind of a step backward, considering you've already been to Mars.

Phineas:
Do you remember that old nursery rhyme, "The Cat and the Fiddle?"

Candace:
[sarcastic] Vaguely.

Phineas:
Apparently, there was a last verse that was lost to history until Ferb and I found it in the Dead Sea. It's a little wet and salty but I'll read it. "Hey, diddle diddle / The cat and the fiddle / The cow jumped over the moon / Due to the moon's low gravity / The moon-jumping cow's milk produced the best-tasting ice cream ever." That last verse didn't rhyme so they left it out of most versions.