There's a saying / piece of prose / rhyme / poem / whatever - that my California and Nevada family knows by heart. Since I originally heard it from my Dad, and my Aunt Mary Lou knows it, I'm guessing that it is quite old, say the twenties or thirties (that's last century for you youngsters).
If you google the title of this post, you'll find that "Double Petunia" is actually a type of flower. Like a begonia. And thus we begin:
A petunia is a flower like a begonia
A begonia is a meat like a sausage
A sausage and battery is a crime
Monkeys crime trees
Trees a crowd
A rooster crowd and made a noise
A noise is part of your face like an eye
Eye is the opposite of nay
Horses nay, and horses have colts
And if you go to bed at night with a colt and leave the window open, you'll wake up in the morning with Double Petunia!