Rock it up

The other day my 5 year old daughter Shelly was singing a song as we drove to my wife's parents' house. Rolf, my 3 year old son gets very annoyed when people sing in the car, and this day was no exception. Suddenly he yelled out, "Shelly! Rock it!" "What does that mean Rolf?" my wife asked." It means shut up but it isn't a potty word." he replied. Then he yelled, "Rock it up Shelly! Just Rock it."

I've got a feeling he is going to be a sneaky lad as he gets older...