Haiku of Haikus

I said to the kids,
"I'm off to write some haikus."
"What are haikus, Mom?"

"They are poetry."
"Well, what is poetry then?"
"That's a good question."

"Hm. Poetry is:
words arranged in a rhythm.
Poems have a beat."

"Like spoken music
poems can go 'Bum da bum'
and sometimes they rhyme."

"A haiku has beats.
It has five in the first line,
then seven, then five."

Mark said, "I'm impressed.
Now explain it in haiku."
Ha! I just did it.