A couple's sandboarding adventure in Peru took an unexpected turn when competitive spirits kicked in.br br Lilly Thomas, 29, and her boyfriend Kai, 28, from Munich, Germany, were enjoying their travels in Huacachina, Peru, when they decided to sandboard down the desert dunes.br br The video captures the hilarious moment Lilly unexpectedly zooms past Kai mid-descent, leaving them both in stitches.