A snowboarding term for when a n00b catches his/her toeside edge and faceplants at high speed. As he/she goes down, his/her legs flop backward at the knees and his/her snowboard smashes into his/her back, thereby resembling a scorpion's tail. Painful to experience, amusing to watch.
Haha, look at that gaper scorpion off those rails." "Ooo, that's gotta hurt.