If...
*you forgot your pass but it doesn't matter because the lifties all know you, you might be...
*your alarm is the snowcats firing up in the morning because you're sleeping in the back of your truck outside the equipment shed, you might be...
*you get up three hours before the snowcats fire up because you're the mechanic, you might be...
*you radio in today's snow report, you might be...
*you found your skis in a dumpster, but you still ski better than 99.9% of the skiers on the hill, you might be...
*you share a one-bedroom apartment with four other people and 27 pairs of skis, you might be...
*you don't know how much a day ticket costs because you always have a pass supplied by your employer, you might be...
*you go to the nicest restaurant in the resort 6 days a week because of the great money you make
...working as a waitperson at that restaurant, you might be...
*you have ever slept in because it "only" snowed 12 inches, you might be...
*you can't remember the last time you actually had to drive your own vehicle to the ski area but you're there every day anyway, you might be...
*you have a salvaged plastic plate and plasticware so your buddies can make multiple trips to the all-you-can-eat breakfast bar on your behalf, you might be...
(This, of course, is why all-you-can-eat breakfast bars don't exist any more.)
*you have ever talked your way onto a snowcat for the purpose of out-of-bounds uphill transport, you might be...
A Ski Bum.