The Invention and Popularity of 'Liquid Ass'

Many material trifles, such as Silly Putty, started as attempts at serious inventions, but in rare cases, the process works in reverse: something developed as a gag gift can turn into something truly heroic. Invented by high school prankster Alan … Continue reading →

Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. 

Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. 

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.