I saw this in Boy's life:
Roses are red
Violets are blue
Some poems rhyme
Some don't
Roses are red
Violets are blue
Some poems rhyme
Some don't
.
There was a young man from Japan
Whose limericks never would scan.
When asked why that was,
He replied "It's because
I always try to cram as many words into the last line as I possibly can."
Train approaching
Whistle squealing
Stop
Avoid that run-down feeling
Burma-Shave
Then again, that poem is not a great poem, but it works well in the context, and does its job suitably well.
I assume this isn't what you meant...