Heh, heh....
you ever watch beginners, in the spring, skiing too close to the edge of a trail? If they make the wrong move, they end up skiing mud, which, as a consequence of suction on the ski, causes them to yard sale into said mud.
Hence, the term dirt chicken.
It's especially fun to watch and especially if they are wearing white pants..... well, it looks like they fell into chicken sh#*.