Canadian prime minister Alexander Mackenzie (who once told Benjamin Disraeli that Canadians "were all but ruined from first to last by English diplomacy and treaty-making and we would have no more of it at any price") was not noted for his tact. A Tory colleague once accused him of disloyalty to the British Crown. "Loyalty to the Queen," he tartly replied, "does not require a man to bow down to her manservant, or her maidservant -- or her ass."
[Presumably he meant to say "donkey."]
Sources
Douglas Fetherling, Broadview Book of Canadian Anecdotes