Questions 1 to 3 refer to the following lyric.

I'm a dingle-dangle scarecrow

When all the cows were sleeping.

and the sun had gone to bed.

up jumped the scarecrow

and this is what he said.

"I'm a dingle-dangle scarecrow

with a flippy floppy hat.

I can shake my arms like this,

I can shake my legs like that."

What is the song about?