Quarterback pretends to take ball from Centre and run a sweep as in play # 3.  However, Centre keeps ball held up and out of sight of the defence.  Then he runs once he sees that the defence is going after the QB. The quarterback does NOT have to touch the ball.
Note: This play is actually illegal because an exchange does not take place between QB and C. However, we allow this play in flag only because it teaches the defence to always keep their eyes on the ball. It is also the only way that slower players can run the ball with success.