Definitions by Art VanDelais

stivotting flapper 

A snow skier who lacks control of his skis and exercises a series of ever accelerating sliding turns with flapping clothes and skis. You must beware for danger of being hit.

As I was skiing out at Whistler I was almost slayed by a "stivotting flapper."

stivotting flapper by Art VanDelais January 15, 2014