At the brother's bachelor party a couple weeks ago, one of his friends was talking about his marriage and how they work through problems. Sometimes they get into arguments and things don't work as smoothly as one would hope. In recapping a conversation with his wife, he once told her to STFU. He then followed it up with, "What are you going to do? Break up with me?".
That quite possibly might be the funniest thing I've ever heard.