Today on the Roz & Mocha Retro Show, we’re reliving some of the most ridiculous challenges we’ve taken on over the years. First up, from 2015, The Coke Boob Challenge — it sounds easy, but is it really possible to hold a can of Coke using only your man boobs? Then from 2017, we attempt the viral Invisible Box Challenge, trying to step over a box that isn’t actually there and make it look believable. And finally, back to 2015 for the Belly Button Challenge — can you reach around your back and touch your belly button? Spoiler: it’s harder than it sounds.