What are the questions he answers to at the end ?

I am very curious bout that too. But I don't think we are supposed know. I think that maybe it is the usual quests magazines and newspapers ask a filmmakers when they make a movie. Not questions about the movie itself.

were not supposed to know

One is pretty obviously what his favourite/least favourite sandwich is. The rest we're not supposed to know.

WHAt is your favorite subway sandwhich????


duhh

if you don't know it's entirely your fault
you need to see the movie again
at full ticket price

There is no audience, hence no questions. He's just giving answers to the questions in his head he imagines they might ask