I can't believe you're able to ski double blacks.... I'm so much better than you.
Also to clarify - I just saw the movie for the first time yesterday. And I'd never heard any of this before. Must be a western thing.
My friends and I only encountered in the last 1-2 years, and we quip from it all the time. Why not? Pole whacking is also a great one.
But hell, I'm usually singing while I ski*, if not growling (it's a technique!). Worrying about what other people think? Life's too short.
* Today was Baby Got Back at high volume on the traverse into the Windows at Breck.