How To Talk To A Father - Toldos 5772

We find that both Yaakov and Eisav talk to their father. We all know that the Derech Eretz of talking to a great person is in 3^rd person. Not you but my father or the Rosh Yeshiva. It seems very strange, when Yaakov talks to his father he talks in second person 27:19 (קוּם-נָא שְׁבָה, וְאָכְלָה מִצֵּידִי--בַּעֲבוּר, תְּבָרְכַנִּי נַפְשֶׁךָ). He speaks to him in second person. Incredibly later when Eisav walks in to his father he says 27:31 (יָקֻם אָבִי וְיֹאכַל מִצֵּיד בְּנוֹ--בַּעֲבֻר, תְּבָרְכַנִּי נַפְשֶׁךָ). He says my father should get up and he doesn’t say you and he should eat from the food that his son has prepared. His son and not your son. Eisav talks in third person and Yaakov talks in second person.