“How old are you?" asks Plastic again. "That doesn't matter," says StingRay. "What matters is how much stuff I know. People who know a lot of stuff don't need birthdays.” AgeKnowledgeBirthdays Book:Toys Go Out: Being the Adventures of a Knowledgeable Stingray, a Toughy Little Buffalo, and Someone Called Plastic Source: Toys Go Out: Being the Adventures of a Knowledgeable Stingray, a Toughy Little Buffalo, and Someone Called Plastic