Yaya holds an official backwards day. On this day, the kids dress upside out, and inside down. They also talk backwards, yes means no, no means yes, yay means boo, hello means goodbye, and she said so means she didn't say so. Although, the game gets out of hand when Wimzie and the kids say that they didn't see Rouso's calculator, when they did. Rouso finds out from Yaya that they were playing backwards day, but his calculator turns out to really be missing. It turns out Bo had the calculator after all.