"Timmy," your dad says, "I know you're graduating, but we forgot to tell you something."
"We decided to get you out of the class," your mom continues. "But you're not going up a grade."
"What?" you exclaim. "That doesn't make any sense."
"Yes it does," says dad. "Instead of moving up, your moving down."
"Back to preschool," says mom. "It will be really easy for you there. And you never have to graduate from preschool if you don't want to."
"But I don't want to go to preschool!" you scream. "I should already have a job!"
"But you don't, Timmy," says dad. "See what you think of preschool tomorrow. If it's too easy, we'll put you in first grade. If it's too hard, we'll put you back in daycare. If you like it, we'll keep you there for as long as you like."
The next day comes. You go to preschool and...