Consider the Great Englishmen of history: Henry V, Horacio Nelson, Winston Churchill, Sir Willie, Lord Hague. None of them would be rude about any man.
Young Hal bantering off Falstaff:
"Thou art so fat-witted, with drinking of old sack
and unbuttoning thee after supper and sleeping upon
benches after noon, that thou hast forgotten to
demand that truly which thou wouldst truly know."