As I come in a-walking, one moist and mucky morning, I spied a brisk young teacher and a student they was warning. The student's response displayed, in almost Platonically pure form, an argumentative fallacy I never met or imagined before. I was so impressed, I nearly dropped me whack-foddly-doo-dah on my foot there and then.
I think the event is best commemorated and anonymized in a fittingly Platonic dialogue:
DIOTIMA, a Teacher: If Socrates has spent the entire lesson throwing weasels at the wall, then in a just school, ought he to have a Friday detention?
YOUNG SOCRATES, a Philosopher: No, it would be most heinously unjust.
DIOTIMA: In what does this injustice consist?
YOUNG SOCRATES: In that it respects persons, and not the law.
DIOTIMA: In what sense does it do so?
YOUNG SOCRATES: We know that Xanthippe also threw weasels at the wall, but we further know that Miss did not detain her, chizz chizz! Therefore Socrates cannot justly be detained either.
DIOTIMA: Will we not think the cases differ in both degree and intent, since Xanthippe was at least making some effort to restrain herself?
YOUNG SOCRATES: No she wasn't! I was too!