Did you know that Underoos are still a thing? Not only that, but they are av...  ...s. And if you are a Harry Potter fan, you can get Underoos with the coats of arms for each of the dormitorie...

An ad firm had asked Larry Weiss to come up with a...  ...the money to keep pushing his underwear idea, and Underoos debuted in 1977. You know they were a success, bu...  ...how successful they were is part of the story of Underoos that you can read at mental_floss.