Marfie Shopmeyer came up with this one:
We had an iguanna that didn't wanna
We had an iguanna that didn't wanna.
My wife said, "Honey, we're losing money!"
We have an iguanna that doesn't wanna"
One day a rooster came into our yard,
Caught that iguanna, right off his guard
He's leaping lizards, just like he useter
ever since that rooster, etc.