"The King's English"
Context: Mistress Quickly keeps house for Dr. Caius, a cantankerous, splenetic French physician with but a scanty knowledge of English. He has a dislike of anyone being in his house. She is a professional go-between, and therefore has frequent visitors regarding courtships and marriage proposals. Now Simple, a servant of one of her customers, is present to convey a message to her. Before she begins a conversation with him, she posts a servant to keep an eye out for Dr. Caius.
MISTRESS QUICKLYWhat, John Rugby!I pray thee go to the casement, and see if you can see my master, Master Doctor Caius, coming. If he do, i' faith, and find any body in the house–here will be an old abusing of God's patience, and the king's English.