Currently The Tale of Despereaux By Matthew Broderick, Emma Watson, Dustin Hoffman, Tracey Ullman, Kevin Kline see related

As we got up from the dinner table last night, Eric said, "Kayla, you wash (the dishes).  Mitchell, you clear (the table)." 

Kayla sang, "I'm a washer..."

Eric jokingly said, "You're not a washer.  You're a nut."

Kayla continued to sing.  "I'm a nut washer.  I wash my nuts."

Abrupt stop.  Followed by a look of shock and horror as a surprised nine-year-old girl realized what she had just said.