You’ve seen the infamous pooping unicorn ad. You’ve heard people talking about how it’s changed their lives. You may own one—or several—like I do. But you won’t TRULY understand how the Squatty Potty has become such a product phenomenon—nearing $100 MILLION in sales—until you hear this conversation I had with its creator Judy Edwards.

At age 60, this mom of seven (!!!) had the idea for a proper-pooping positioning stool after years of health issues. Along with her husband and son,they started in 2011 with a simple wood prototype they put together in their neighbor’s garage.