Cape Canaveral, Schrödinger's Cat, and Cyndi Lauper's Hair - S1-E8
Continuity mistake: Missy asks if she can dye her hair orange. When she does this, she has a section of hair either in front of or behind her shoulder, depending on the angle of the camera. (00:08:20)
Cape Canaveral, Schrödinger's Cat, and Cyndi Lauper's Hair - S1-E8
Continuity mistake: When Sheldon says that George Sr gives off a lot of heat, George's hands change position. He has 1 on top and 1 underneath the duvet in the first shot, and both on top in the second shot. (00:14:50)
Cape Canaveral, Schrödinger's Cat, and Cyndi Lauper's Hair - S1-E8
Continuity mistake: Mary tells Missy that her hair isn't changing colour. Missy then proceeds to sulk and has her spoon in her dish. The camera changes, and now she is holding the spoon upright. (00:08:20)
Cape Canaveral, Schrödinger's Cat, and Cyndi Lauper's Hair - S1-E8
Continuity mistake: When George Sr. goes to wake Sheldon up, we see Missy lying on her bed with her leg stuck out and uncovered by the duvet. When we see George closing the door, Missy's leg is now covered by the duvet. (00:05:55)
Answer: Some people just have a dislike for someone that can't be explained. Could be as simple as the way he's dressed.