When Jill and Randy are in the store buying clothes; Jill is looking under the changing rooms for Randy and apologizes to the woman in the room next to him for looking under the door. The camera changes to a wide shot of both Randy's changing room and the one next to him and the lady is no longer in the other room.
Doug O'Brien tells Tim his hot rod has a great looking short block. The show's writers seem to have a penchant for the term "short block" in comments about car engines. A short block is the part of an engine above the pan and below the head gaskets. It is not very easily seen when the engine is installed in the car and its appearance would not likely be commented on in real life.