“I think he had some sort of cartoon on his wall that said 'mental floss.' The first newsstand issue of Mental Floss magazine features the iconic, tongue-out photo of Albert Einstein on the cover. Following two short previews, Mental Floss uploaded its first true video—a List Show video titled 50 Common Misconceptions—on March 13. Among other places …\"But there was one Mental Floss magazine movie cameo that didn't happen. They’re real, significant people in the world who somehow touched Mental Floss and got ensnared by us along the way.