Introduce to a good friend

During a good manners and etiquette class, the teacher says to her students, "If you were courting a well educated young girl from a prominent family, and during a dinner for two you needed to go to the toilet, what would you say to her?"

Mike replies, "Wait a minute, I'm going for a piss."

The teacher says, "That would be very rude and improper on your part."

Johnny replied, "I'm sorry I need to go to the toilet, I'll be back in a minute."

The teacher says, "That's much better but to mention the word "toilet" during a meal, is unpleasant.

So Charlie says, "My dear, please excuse me for a moment. I have to go shake hands with a personal friend whom I hope to be able to introduce to you after dinner."

The teacher passed out.