Originally Posted by coolconfidentme:
Giver her a consequence for it. When a DCK does that I say, "This tells me when we eat..." (pointing to the posted menu.) "...not this!" (pointing to her mouth.) "If you continue to be rude saying it over & over, you can have a timeout." It works here. 
I may try this today, although I don't have a posted menu for the kids to see. I have an online menu for the parents only. I will have to think about that ...