When I was at school, long time ago, the speaker of our forthcoming Speech Day had made a comment in the Press having a go at teenagers who didn't know the Natonal Anthem.
We the Sixth Form printed of three verses and told the whole school to learn it, after the obligatory first first everyone went on singing. The Head was purple with anger, but at the end the Speaker simply said Touchee (can't do accents), turned to the Head and said No recriminations please!