The Yale Rule states that within five minutes of meeting someone who attended Yale, you will be informed of that fact. This is rather humorous, particularly given that Yale isn't that great a school.
"Greetings, my name is Throckmorton Q. Covington; pleased to meet you. I say, it's a fine day. It reminds me of when I was a young lad attending Yale...."
Ha! The Yale Rule's been proven once again!