Yeah people say buddy in Vancouver all the time too. Using it as a placeholder for a name (I was driving and buddy cut me off) is pretty rare, but it's very common when used similarly to dude or bro.
I've heard a few people say "holy mackerel" but they all tend to be older people.
I can't wrap my head around the inhaled affirmative at all. I've been sitting here inhaling quickly for a few minutes now and I just don't understand
Also, you can say bird to mean penis here too. That one came straight from Trailer Park Boys.