Children's picture book, The Terrible PLOP, is written by Ursula Dubosarsky and illustrated by Andrew Joyner.
To be fair, my first reaction to seeing the title and cover made me hesitate. The Terrible PLOP. I first assumed it was a made up creature, invented and used specifically for rhyme potential. I also felt the cover was so-so and thus I began reading, unimpressed and ready to get it over with.