Bad words?

This is Mommy posting.....first bad words said today and they were doozies! First, as it was raining really hard Zach advises me that it is "f**king raining" so I say PARDON??? He then tells me it is "P***ing out" can you believe that...had a word with everyone that is interacting to advise of these minor slip ups...we didn't make a big deal, just let him know that those words aren't very nice coming out of little boys mouths and we'd like it if he didn't say them....we'll see!