This reminds me...in my family, we often mispronounce words on purpose, among ourselves, just for fun. The problem begins when we consistently do this. It becomes difficult to pronounce these words properly when surrounded by "real" people. One of my favourites is "hors d'oeuvres", which we always say "HOARS doovers". Also "connoisseur" is "kon-OY-sser". Very embarassing, when I say it to non-family members, who then think I must be ignorant!