At the beginning I was honestly confused, as I had no idea what was going on when they were showing "Previously On A. P. Bio" and I had never seen anything that was being shown. I personally hadn't seen this kind of format before in a television show, so it took me a minute to realize the greatness of this episode. I'm glad I kept watching. It was so well-written and funny. I had to rewind one scene in particular because it was so hilarious. Well done cast and crew!