Yeah, I do this all the freaking time, not only when I buy a ticket, but also when I buy goodies from concessions. I pay the nice person for my Diet Coke and Swedish Fish and they say, “Enjoy the show,” to which I reply, “You too!” And then I walk away shaking my head and they swipe the next person’s debit card thinking I’m a dumbass. Thanks to The Oatmeal for the cartoon.