One of the ways we trained Sempi to say “Please” and “Thank you” is by asking him “What do you say?” after he receives a favor from someone. With that context in mind, this conversation happened in the car. Vian: Can I have that monster truck, Sempi? Sempi: Here you go. Vian takes the truck. Sempi being the responsible older brother wants to teach Vian good manners. Sempi: What do you say, Vian?