One time on Westjet from Regina - Vancouver we made a quick stop in Calgary to pick up passengers and the flight attendants did the exits & oxygen 'macarena dance' as we taxied out to the runway. When they were finished the demonstration in English one of them pushed the play button on a portable stereo with the instructions in French, but instead of repeating the whole thing as usual she just turned the volume way down (aaaaand all you Frenchmen can just find your own way out) and they strapped in for take-off.

A pity there weren't some Québécois on the flight, now that would have been really funny.

There probably were, nobody complained but I thought it was funny anyway.