Tripping on a banana skin can have an audience rolling in the aisles. Assuming, of course, you’re careless enough to leave one lying around.
The now ubiquitous slipping-on-a-banana-peel gag is thought to date at least as far back as 1879, when Harper’s Weekly magazine warned its readers against following in the literal footsteps of inconsiderate fructivores. The great novelist Umberto Eco, for his part, believed that the iconic banana skin evolved as a visual euphemism for far deadlier heaps of dog detritus.
Never having slipped on a banana skin, I’ve often wondered just how dangerous they can be. And for that matter, whether it’s the inside or the outside of the fruit that poses the greater health hazard. Fortunately, these are exactly the sort of slippery questions that scientists have been falling over themselves for decades to peel back and really sink their teeth into.
In 2012, Kiyoshi Mabuchi and colleagues at Japan’s Kitasato University in Japan decided to formally investigate this phenomenon, by studying the coefficient of friction of banana skins. Their results appeared in the journal of the Japanese Society of Tribologists, a term for scientists who study the way moving surfaces interact.