Don't be surprised if you reach the end of your rope today. What does that mean? Your humor isn't working on this person, and you're about to get down and dirty with someone who's really asking for it. If you're with your crew when it happens, no one will blink an eye or notice anything they shouldn't. If you're with someone who isn't accustomed to your frankness, there's only one thing you can do. Offer to get them earplugs.