Old man: I drink three Cokes a day!
Lady: Three Cokes! You’re in bad shape!
Old man: *I’m* in bad shape? I am 90 years old!
Lady: But Coke is bad for you! It’s full of chemicals that will mess up your biology!
Old man: Are you a biologist?
Lady: (after a long pause) Yes.
Old man: Okay then. Bye. –23rd St & 8th Ave Overheard by: Bemused