Complex sentence: Red lets Deebo borrow his bike and when he tries to retrieve it, Deebo magnificently punches Red in the eye and sends him flying and he and his father leave the site as Deebo threatens to beat his father too.
Split into simpler sentences: Red lets Deebo borrow his bike and when he tries to retrieve it, Deebo punches Red in the eye and sends him flying. He and his father leave the site as Deebo threatens to beat his father too.