Canada seems to be missing a number of radioactive devices, so, ya know, keep your eyes open for them. They may have just lost them in the couch cushions or behind the refrigerator, but who knows.
So, how do you know if a nuclear explosion is Canadian? There will be two flashes followed by an earth-shattering “Eh.”

Oops. Well, they’re just radiological devices. Its not as if anyone from the Religion of Peace would ever think of doing anything violent or harmful with them. Canadians, What a bunch of Eh’holes.
a little radiation never killed anybody.
We here in Minnesota keep telling you guys it isn’t the dirty Mexicans that you have to worry about! It’s the great Gay Horde from north of our border sweeping south and we here in Minneapolis are at ground zero! Laugh you southerners…”first they buggered the Vikings fans and I did nothing”…
They are still looking for that dratted first nuclear warhead they made. I know it’s around here somewhere…