What is a humorous poem with five lines?

A limerick is a humorous poem with 5 lines.

A tutor who tooted a Flute

Tried to teach two young tooters to toot.

Said the two to the tutor,

"Is it harder to toot

Or to tutor two tooters to toot?"

A flea and a fly in a flue

Were imprisoned, so what could they do?

Said the fly, "Let us flea."

Said the flea, "Let us fly."

So they flew through a flaw in the flue.