Another unique local custom here is the "Kootenay Cleanse". There are any number of variations, the point being to "Detox" and to prove to friends that you're not an addict.
Usually it involves giving up solid food, cigarettes, alcohol, Cocaine, LSD and MDMA for a week. But oddly enough you're still allowed to smoke weed, because, well, it's the Kootenays after all.
If you're thinking of trying it, try and get as many of your friends on board as possible, because, truthfully, it won't be possible if they're not...