L.B.
I agree that ignoring it is the best way to rid yourself of it, but one thing I have done in the past when ignoring doesnt work is to make my own words up that are acceptable to me. Like we say dirty diapers or fudge brownies. I allow my kids to use Tartar Sauce from Spongebob too. I just tell them that that one word is not acceptable to me, but if you need a word try dirty diapers, or whatever word you think is acceptable to you. Dont hesitate to tell him that most people do not like to hear those kind of words either, this always gets my kids thinking, especially since they know that people listen to them. Good Luck!