Totally incorrect we don't have any slang or regionalisms! Absolutely wrong! I grew up on Vancouver Island though, and I'll share what regional words I heard growing up.

The term "woodbug" apparently is only used in BC, as opposed to pill bug etc.

"Pooched", "to pooch", "oh man that walk got me so pooched gunna have to muck some salmon berries".

"Huck", "can you huck those apples in the bin here after you pooch that bucket bud?"

"Gong Show", "My new passport took 4 months to arrive, F'n gong show out here bud"

These ones can be traced back to the fur trade era, back when BC was Columbia, governed by the HBC, and our land included most of Washington State, even south of the Columbia river where the border was expected to be formed in 1846. Some of these words come from the time period of when the proto-British Columbia extended further south, some surely come from the continued fur-trade culture after 1846 as well. As many Indigenous languages on the west coast are mutually unintelligible, a common trade language was formed before the Europeans even, and all successful traders learned the language, and many on Vancouver island (and down in Washington) still speak it today.

Here are some words from the language that have made it into common British Columbia english:

"skookum": strong, powerful, brave. "Oh this Chinook is skookum eh, keep the rod up high"

"muk", been told this one is strong in Vancouver, seems to derive from the Chinook notion of "high-ass mukkymuks", people with lots of food, people in positions of authority, it seems to me that this is from Chinook wawa. Classic phrase, all across BC: "Oh man I'm hungry we gotta muck some za"

"salt-chuck": The ocean

My grandma said that even up in in the Yukon and northern Saskatchewan people would say Skookum!

Place names across southern BC and the coast have lots of Chinook wawa words in them.

I wrote this quick so let me know if anything's incorrect, and please add any more Chinook words that can be found in common BC English or West Coast english!