I’m in the Pacific Northwest (from Portland, currently in Southern Oregon, moving to Bend in a few weeks). I heard the term primarily from East Coasters when I skied at Alta way-back-when. By the time I was skiing all over the place, around ‘04, it was ubiquitous everywhere I skied, at least for park skiers - Colorado, Washington, Oregon, Utah, Montana... It was the ski equivalent of n00b. I’m old now, so I’m not sure if it has had any longevity as a slang term.