Freestyle skiing is a skiing discipline comprising aerials, moguls, cross, half-pipe, slopestyle and big air as part of the Winter Olympics. It can consist of a skier performing aerial flips and spins and can include skiers sliding rails and boxes on their skis. Known as 'hot-dogging' in the early 1970s, it is also commonly referred to as freeskiing, jibbing, as well as many other names, around the world. (Source: Wikipedia.org, CC BY-SA)