Nah just a middle finger to trudeau trying to strongarm/bully him.
The response from the canadians was the height of stupidity. They have far more to lose here than the americans do and trump knows it, so he knows that even if he makes both their situations worse he'll be making theirs far worse than his.
It was a colossally stupid move by trudeau but trudeau is a bully that got very used to bullying (in this case, bluffing) his way into getting his way in canada and then foolishly tried the same tactic with trump.
Trump's just called him out on it. In a colossally childish way I'll admit, but he has. He knows full well he's in a much stronger negotiating position than the canadians are and so the responsive tariffs from the canadians have simply been met with even bigger ones from trump.
Truly abysmal statesmanship from trudeau. Abysmal.