...in a small confined place full of people, your son says aloud "Papa, aapki zip khuli hai"?
I would have wanted to just evaporate into thin air right then if it was me. But I really liked my hubby's way of responding in such a situation. He just smiled and said "Thank you for telling me".
But we just couldn't hold our laughter at that point and both me and hubby burst out laughing at the situation.