When someone goes on vacation and asks you to check in on their house while they're away. Ex: water plants, feed pets, shovel the driveway.
"We're going away for a week. Can you do a Canadian break and enter and feed our dog?". It's based on the stereotype that Canadians are so polite that when the break into a house they do nice things for the owner instead of stealing items.
When one Canadian of either sex promptly greats another Canadian with a hey buddy , or hey guy and the widely acceptable hey friend. Followed by a fart if male or queef if female into the other Canadians face.
Did you see them two flapperheads down by the lake, I think they are about to do a Canadian Handshake.