Nursery Rhyme sat upon pussy cat down went he?

Answer 1

He sat on a tree, not on a cat:

Little Robin Redbreast sat upon a tree,

Up went pussy cat, and down went he!

Down came pussy, and away Robin ran;

Says little Robin Redbreast, "Catch me if you can!"

Little Robin Redbreast jumped upon a wall,

Pussy cat jumped after him, and almost got a fall!

Little Robin chirped and sang, and what did pussy say?

Pussy cat said, "Mew," and Robin jumped away.

Please see the Related link below.

Answer 2

This line is from the nursery rhyme "Hey Diddle Diddle". It describes a scene where a cat plays a fiddle while jumping over a moon. It is a whimsical and nonsensical rhyme commonly told to children.