A gay couple are in a restaurant having a nice dinner. A straight couple enter and take the table next to them, and immediately start fighting. They fight about the menu and the wine. They fight about how to deal with children. They fight about the color of the new carpet. When the bill arrives, they even argue about the amount of the tip.
When they finally get up and leave, the one member of the gay couple heaves a sigh of relief and says to his partner, “See. Mixed marriages just don’t work!”