Johnny Crapaud[< F crapaud toad (dial. "frog")]Slang, Derog.
n. a French Canadian.
1851  . . . but these Ayrshire emigrants appear to be shrewd enough to buy out Johnny Crapaud, when he happens to possess good or easily available and improvable land.
1913  Yet, raged as he was, and ready to take the Johnny Crapaud . . . by the throat, he was not yet sure that Jean Jacques was not armed.
1919  "The trickiest damn bunch that ever come into these mountains are them Johnnie Crapeaus from Quebec--they're more damn trouble to the police than so many Injuns."
1965  . . . wherever forests were being cut or railways and harbours built, or mines were being dug there would be found "Johnny Crapeau," esteemed alike for his good temper, great physical strength and ebullient spirits.