The Princess Bride
“You keep saying that word. I do not think it means what you think it means.” This one is kind of obvious and it’s in reference to when the self-proclaimed genius Vizzini uses the word “Inconceivable!” over and over again. Inigo Montoya is forced to point out that it’s like using the word “impossible,” if it happened then it’s not “inconceivable,” it’s just unlikely that it occurred.