recently my 4 year old heard my teenage niece saying F*ing, and today I had to take him to a doctors appointment as he’s not well, i honestly wanted the the ground to swallow me up, when he decided to use this language infront of the dr, the dr looked and me horrified (rightly so) I felt so embarrassed and ashamed. He’s now used this word A few times, I have been ignoring it when he says it, but he keeps doing it! What else can I do!