Look, let's be brutally honest. This was absolutely staged. Stand up comedians do this all the time (as I am one) It is very witty to get someone to say something in advance to make witty comments after, but it is not improvised. Please, let's stop being so stupid to believe this was not supposed to be part of the act. You'll notice he doesn't have one or two witty responses, but over five, just lined up, as part of an act. Come no guy, let's get real
So you're assuming that I had to have planned this simply because it's funny for two whole minutes? That says much more about your comedy than mine.