Before the series most beloved characters (twin brothers Fred and George Weasley) dropped out of school, they began their own startup. The success of Weasley’s Wizard Wheezes, a joke shop, was the result of excellent marketing strategy — distributing their products throughout Hogwarts and relying on their network of friends for word-of-mouth a.k.a. social proof.
Most of their products like, Love Potions, Dungbombs, Self Writing Quills, and Skiving Snackbox catered to their target audience – the students (children, teenagers, and young adults) of Hogwarts. Duly, their quirky and inventive names were relevant to their product line (U-No-Poo, a pun on You-Know-Who) caught the attention of students.