A: What's for dinner? B: I'm not sure. A: How about a pizza? B: You had pizza for lunch. A: But I love pizza. B: Everybody loves pizza. A: So why can't I have pizza for dinner? B: Because you need variety. A: What's "variety? B: Different thingsânot the same thing all the time. A: You mean, like a pepperoni pizza instead of a cheese pizza? B: No, I mean a salad instead of a pizza.