Dont allow it in my home. Being in sales for so long if nothing else has taught me the value of having command of the English language in this country. People tend to value and respect good communicators. To say its ok as long as you can turn it off when you need to doesn't cut it. I think its important when your young to represent yourself the right way. In a manner that demands respect and also says something about what is valuable to you. Using this foul and ignorant way to communicate is not the way to do it. Making this important at a very young age is criticle. To let your kid run around playing this 'role' is just not wise.