The One With The Truth About London - S7-E16
Audio problem: During Rachel's scene sitting on the couch with Ben talking about her and Ross and her sisters, Rachel's mouth moves in any scene showing Ben, but without her being heard.
The One With The Truth About London - S7-E16
Continuity mistake: In the flashback to London, the dress Monica is wearing is not the same one that she is wearing in the original episode, The One with Ross' Wedding, although one can see that they tried to make it look similar. (00:16:20)
The One With The Truth About London - S7-E16
Continuity mistake: In the opening credits, Monica and Chandler are talking about which minister to use. Chandler's feet are crossed and on the table; at first his left leg is over his right, then in another shot his right leg is over his left. (00:02:45)
The One With The Truth About London - S7-E16
Continuity mistake: After Rachel shows Ben the pencil and quarter prank, she lays the pencil down and it is pointing straight ahead. When the pencil is shown again it has moved. (00:05:45)
The One With The Truth About London - S7-E16
Continuity mistake: When Rachel goes to Carol's house and tries to tell Ben to stop playing pranks, her bag changes from being on her shoulder to in her hand in almost every shot. (00:12:25)
The One With The Truth About London - S7-E16
Other mistake: Right at the very end, when Joey is in the fat-suit and picks up a piece of food and says "How you doin'?" he doesn't put it in his mouth, he just lifts it to his lips, stops, and tries to stay still. If this had been a freeze on the part of the director then fair enough, but it isn't as he and particularly Monica are still moving. It just looks rather corny and amateur, as though they are waiting for the "cut" to be called. (00:28:00)
The One With The Truth About London - S7-E16
Continuity mistake: At the beginning when Chandler is talking about two reasons to pick a minister, he counts them using his left hand. However, in the wide shot straight afterward his right hand has two fingers up and his left hand is in his lap. (00:02:00)
The One With The Truth About London - S7-E16
Continuity mistake: When Joey is reading his speech about all the giving and receiving, Chandler has his legs on the table at the coffee shop. You can see his shoes on the table when they show Joey, but when they change the shot to Chandler his legs are on the floor and crossed. (00:10:55)
The One With The Truth About London - S7-E16
Continuity mistake: In the flashback, Chandler says to Joey that he is watching a movie when the camera cuts to show the blank screen. In the reflection, you can see that there is no-one present in the room. (00:18:20)
The One With The Truth About London - S7-E16
Continuity mistake: In the flashback scene where Chandler and Monica are in the hotel room, there are three paintings on the wall of flowers, etc. In the original scene from ‘the one with Ross' wedding part 2' the pictures are completely different.
The One With The Truth About London - S7-E16
Revealing mistake: When Monica gives Phoebe the headache medication (Hexadrin) she, not only doesn't take the lid off - and therefore fails in pretending to put it back on - but also doesn't actually give Phoebe anything. Extended episode. (00:07:30)
The One With The Truth About London - S7-E16
Visible crew/equipment: As Joey is entering Monica and Chandler's apartment, there is a black microphone visible for a few seconds moving above Joey's head as he is walking towards Monica and Chandler at the table.
Answer: Usually by the seventh night of Hanukkah you don't know what to get the other person, and you will probably resort to getting the other person something insignificant. Chandler is basically saying that the pen is a stupid gift.