This is completely off topic, and your grammar lesson is wrong. "Thou" is second person familiar, not second person singular. And "you" is second person formal, NOT second person plural. Neither has a plural form. Shakespearean characters often berate crowds in the thou form. I'll admit, if I would have thought about it... addressing a crowd in the familiar is condescending and abusive, especially if your screenname has a patent of nobility. On the other hand, the King James Bible addresses the deity in the familiar all the time, and the religious inferiority was the relationship I was shooting for.