|Bemer S. Pague|
Neither term seems completely innocent.
Chinook comes from the fur trapper and settlement era, and at least hints as a reminder of dispossession and our ignoble origins.
Pineapple express is to my ear a flip off-rhyme with "Banana Republic," and also might say something about dispossession.
|"Pineapple express" only dates from around 1990 it seems|
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Your mileage may vary.
I think I prefer "Chinook," though, because of its association with the jargon and the creative seam where different cultures met, traded, and generated new ideas. It's older and seems to have a much deeper established usage. There's also more "there" there in Chinook than in the pineapple - at least for around here.
|Weather Forecasting and Weather Types|
on the North Pacific Slope
Bemer S. Pague (et. al.), 1897