I think we can skip the soap this time....

Princess: "MOMMY! MOMMY! Bad said the 'S' word!"

Me: "Really?....what's the 'S' word?"

Princess (leaning in to whisper in my ear): "Stupid!"

Me: "Bad - did you say 'stupid'?"

Bad: "Yes."

Me: "Did you call your sister 'stupid'?"

Bad: "No."

Me: "Then what did you call stupid?"

Bad: "Ken's shirt."

Me: "Okay....Princess, you're right - stupid isn't a nice word and we should try not to use it. However, Ken's shirt IS stupid, so let's just let it slide this time, alright?"