So I pause and I call over "Don't worry about it, we'll deal with it tomorrow."
His grandmother's face nearly splits open with relief. "Oh good," she sighs. "You know about this?"
That is when it dawned on me and I found myself standing in the middle of the hallway in the Performing Arts Center explaining loudly for grandmother and all the other parents to hear:
"The really bad word that you can't say is not, repeat NOT the F-Bomb! It's only MacBeth! Not the F-Bomb!"