You Are Stronger Than I Expected (そうでなくてはつまらん！) is a counterattack used by Meta-Cooler.
When Meta-Cooler and the opponent get into a hit struggle, Meta-Cooler knocks the opponent away. Then, he flies toward the opponent and knocks them away with a kick. Lastly, Meta-Cooler flies toward his opponent and knocks them away with a Kiai from his hand, inflicting a great deal of damage.
Meta-Cooler uses this attack against Goku in the movie Dragon Ball Z: The Return of Cooler, after Goku transformed into a Super Saiyan. Using the "You Are Stronger Than I Expected" counterattack, Meta-Cooler knocks Goku into a mountain, but Goku retaliates by super-punching Meta-Cooler's metal arm off.