The World’s Worst Parents by David Walliams is a collection of short, humorous stories that portray an assortment of outrageously awful parents. Each story focuses on a different parent or set of parents with exaggerated, hilarious flaws, from over-the-top selfishness to extreme laziness or obsession with odd hobbies, making them entertainingly terrible caregivers.

These parents each have unique, larger-than-life personalities and looks that match their flaws. For example, there are parents who are shockingly dirty, embarrassingly self-centered, or ridiculously controlling, making them more of a burden than a blessing to their children. Walliams' writing combines humor with playful absurdity, and Tony Ross’s illustrations add to the grotesque and cartoonish feel, making these "worst parents" entertainingly dreadful. Each character serves as both a source of laughter and a cautionary tale of what not to be as a parent.