I Pissed Off Two Canadians

True story but bear with me; There is a joke.

I was working out of town and staying in a motel. After some drinks I'm walking back to my room and in this hallway there are 2 people walking towards me and maybe twenty feet behind them is my buddy coming in from a smoke. The two guys were walking to their room and talking to each other and it was just obvious they were Canadian. (We were also about 20 miles away from Canada so there was that) I'm about to walk past them but instead a light bulb shines above my head.

Me: You guys are from Canada yeah? Them: Yeah. Me: Did you know Canada used to be called CND? Them: No. How's that? (They were still nice and cordial at this point) Me: Well originally Canada was called CND. The US called them and asked how that was spelled and they heard, 'C eh, N eh, D eh.' Them: Get the fuck out of here.

Swear it's a true story. I asked my buddy who had just come in from smoking if I was being some kind of drunken dick and he said no and he thought it was a stupid joke but kinda funny.

TL:DR I pissed off two canadians. I didn't even know that was possible. Maybe they're the exception to the rule?