1. I can't remember if the high school was doing a reverse dress day or something but Kurt comes to school in a skirt/dress that is way too short or sexy and Puck freaks out. Puck basically forces Kurt to change his clothes and Kurt puts on a modest sundress.
2. Burt is looking at Puck and Kurt and realizes that they are basically his wife and him all over again. They act the same way and everything.