what to say to nit pickers at car shows

Had a kid at the monday night cruise walk up to our car with his little friend and said our roadrunner was a challenger. Me and my both day said roadrunner.... he looks at us and tells his friend its a challenger again. So me being the guy I am went up to him and told him its a roadrunner and pointed out the decail on the side and the badging.. and then proceeded to tell him he made himself look like an idiot and to go learn what he's talking about. lol