In the freshman, Buffy's first night with Kathy is pretty restless-Kathy is snoring. Watch the duvet. It is up to Buffy's waist in the first shot. A second later, she looks to the side and the camera shows her in the distance looking at Kathy - the duvet is now up to her shoulders! It still is up to her shoulders when the camera focuses on Kathy. In the next shot, Buffy is seen lying in bed again (a split-second later) with the duvet back down to her waist! It would have been impossible for her to have pulled the duvet up or down without us noticing!