It is a semi-educational book with no plot about how all animals (including humans) poop, with some comparisons (e.g. an elephant makes a big poop and a mouse makes a tiny poop), and questions (e.g what does whale poop look like?). It also discusses the scatological habits of some animals and briefly makes a link between eating and pooping, though it doesn't actually explain what happens in between.
Because it is a relatively well-known book and because it's about poop, it's often referenced as a joke in various works.
Everyone Poops provides examples of...
- Ambiguously Brown: The book features three boys (a school-age boy, a toddler, and a baby) and a man, all of whom have brown skin and their ethnicity is not brought up.
- Bird-Poop Gag: One line is "Fish poop and so do birds". It's a downplayed example, since we don't see where their poop lands.
- Title Drop: The book ends with the phrase "So everyone poops!".
- Toilet Humour: A lot of this book is written jokingly, such "a one-hump camel makes a one-hump poop and a two-hump camel makes a two-hump poop— only kidding."