Joey has a way of giving you a dirty look and smartarsed answer at times, and needs to be pulled up when he does.  But it is never that simple with the kid who doesn't shut up.

Me;  'Joey, take that cheeky look off your face'.
Joey; 'What do you mean?  What dirty look?  How can you tell that it was a dirty look?  What did it look like?  What made it a dirty look?  It wasn't a dirty look!'

Etc etc.