Some professors like play that tough role. I did good in my Honours 4th years thesis, but that was 30 minutes. One member tried to play hard ball, but i was damn ready. For the PhD it's going to be 3 hours, and one member is so picky, so last september during my 3rd year report, 30 minutes long, he was picking on tiny things. I was like, I can't wait until I see his face again for the big one