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: In the hotel room, when future Lister is telling Lister he doesn't look pleased to see him, the two Listers are standing directly in front of each other, but from another angle, future Lister is standing around 90° rotated from before, and a few steps to the right of Lister. (00:25:35)
Stasis Leak - S2-E4
Continuity mistake: When Lister is in the hotel room with future Lister and Kochanski, Lister says he came because he thought he was going to get married whilst talking to future Lister, but in the next shot, Lister's facial expression has suddenly changed and is now looking more confused. (00:25:35)
Stasis Leak - S2-E4
Continuity mistake: When Lister is leaving the honeymoon suite, his locks move between shots. (00:26:25)
Stasis Leak - S2-E4
Continuity mistake: When future Lister is making Lister and Cat leave the hotel room, Lister begins talking to future Lister about living his life. Future Lister is standing beside the door in one shot, but has his head suddenly resting on the door in the next shot. (00:26:25)
Stasis Leak - S2-E4
Continuity mistake: At The End of the episode when the third Rimmer appears from inside the sink, the reflection of Lister on his bunk in the mirror shows he has a blanket over him. In the wide shot there is no blanket. (00:28:40)
Continuity mistake: In the hologram simulation suite, the amount of smoke changes from cut to cut throughout the scene. (00:06:30)
Continuity mistake: At the disco, when the Rimmers are seated at their table, the plant moves from in front of the lamp to behind it. (00:15:40)
Continuity mistake: In the disco when Lister complains about the female Lister's attempts to impress him, his hair is in front of his left shoulder, then behind it. (00:19:10)
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)
Continuity mistake: When the Cat dances at the disco, he jumps up and grabs the mirror ball with both hands. In the next shot he is only holding it by one arm. (00:20:25)
Continuity mistake: When Lister and Rimmer talk to Holly at the disco, Lister's arm is on the table. When the camera angle changes, it is on his lap below the table. (00:21:15)
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)
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