A husband is mad that his wife is paying for air travel to have her family come visit (maybe for a holiday: Thanksgiving or Christmas or Chanukah, or Arbor Day, or something like that), and he says: “How come they get to travel on my dime, and just to criticize every little thing that I do?” And his wife says: “On your nickel: They’re flying Southwest Airlines. And actually, they’re traveling on our nickel: I work too, you know.”