a mean something
From Longman Dictionary of Contemporary Englisha mean somethinga mean somethinginformalGOOD AT used to say that something is very good or that someone is very good at doing something He plays a mean game of poker. They serve a mean Sunday brunch at the restaurant on Fourth Street. → meanExamples from the Corpusa mean something• Stritch plays a mean piano.• They always put on a mean Sunday brunch.