But there aren't any cold water swimming challenges like this one. According to Oddity Central, this particular challenge is called the "Bubble Baba Challenge," which translated means the "Bubble Woman Challenge." And no, that's not because it's only open to women, it's because participants must swim 100 meters using a floatation device that's — ahem — an adult blow-up doll. And that's more challenging than you might think — besides the part where you're laughing so hard you'll probably choke on the Ob River, these dolls aren't exactly designed to be maneuverable on the water, which makes for seriously entertaining viewing for all. The first five swimmers across the finish line get a prize, which is hopefully cash and a lot of it so they can buy back their dignity.