Continuity mistake: When Rimmer is standing on the beach and conjures up the green car you can see the wheels are partly in the sand. When he then gets into the car, tyre tracks are visible behind it. When he starts driving off, the tyre marks are now gone. (00:18:25)
Continuity mistake: When the Cat and Lister are playing golf, they stop next to a bed with Marilyn Monroe sitting on it. When the camera angle changes, they begin walking from the other side of the bed. Also Marilyn Monroe is now kneeling. (00:24:20)
Stasis Leak - S2-E4
Continuity mistake: When Lister walks through the Stasis Leak for the first time, his hands are up by his face and his locks are in front of his shoulders. In the next shot from the mirror, his arms are lowered and his locks are only over his right shoulder. (00:09:30)
Stasis Leak - S2-E4
Continuity mistake: When Lister's double comes out of the bathroom, Lister's locks move from in front of his shoulders to behind his neck. (00:25:15)
Stasis Leak - S2-E4
Continuity mistake: When Lister's double says 'You don't look pleased to see me' his locks move from over his shoulder to down his back and they continue switching during the scene. (00:25:30)
Stasis Leak - S2-E4
Continuity mistake: When the Cat and Lister look at the wedding photo at The End of the episode, Lister is holding the photo at the bottom left corner in some shots, and the bottom right in others. (00:23:10)
Continuity mistake: Lister and Rimmer's bunk room looks exactly the same in the flashback scenes during this series as it does in the present time. In the first series it looked completely different, so surely the look should have changed slightly for the flashback scenes?
Continuity mistake: As the crew enter the game, Lister pushes the door to the beach open. However in the next shot, the door is opening from the other side, i.e. Lister is pulling the door. (00:16:10)
Continuity mistake: In the quarters of the female versions of the crew, the newspaper clippings and certificates on the wall still have the name 'Arnold' on them, and not the female equivalent, as it was supposed to be. (00:23:15)
Continuity mistake: When Lister puts his Better Than Life helmet on, the cable is hanging over his right shoulder. In the next shot it is hanging down over his left shoulder. (00:15:45)
Continuity mistake: When the bike appears on the beach, the front tyre is above the level of sand. In the next shot it has sunk by about an inch. (00:17:50)
Continuity mistake: The sand that lands on Rimmer's shoulder when Lister and the Cat drive away on the bike disappears in the next shot. (00:18:10)
Stasis Leak - S2-E4
Continuity mistake: When Rimmer is talking to the captain while he is dressed as a chicken, the blue bucket moves between camera cuts from being hung up on the large canister, to being on the floor next to Rimmer's bed. (00:20:35)
Continuity mistake: When the Cat is kissing the photo of the mermaid, in the next shot the photo has disappeared. (00:24:50)
Continuity mistake: When the Cat jumps up to grab the mirrorball, a comb appears in his hand from nowhere before disappearing again. (00:20:25)
Answer: The cello is a large four-stringed instrument, which, when it is played, stands vertically on the floor between the player's legs (assuming they are seated). If it is to grow as large as the other instuments mentioned will, it would require a rather unseemly lack of femininity to be able to encompass it with the legs.
Rooster of Doom