The One With Rachel's Phone Number - S9-E9
Continuity mistake: Near the end when Rachel runs after Phoebe and Mike to ask Mike if the guy from the bar called, she leaves the apartment with her bag, which she places over her left shoulder. When she is talking to Mike the bag is gone, and then when she returns to the apartment she has her bag again. (00:20:30)
The One With Rachel's Phone Number - S9-E9
Visible crew/equipment: After Chandler has climbed down the fire escape and shows up in the hallway where Joey's been waiting with a baseball bat, when they both walk into the apartment the opening in the wall can be seen beside the door. We can see the opening again after Joey finds Chandler's suitcase.
The One With Christmas in Tulsa - S9-E10
Audio problem: In the scene before the opening credits, if you listen carefully to Chandler's line, "If I don't get it done, I'll be fired", you can tell it's an overdub. The background noise and volume levels are different than the rest of his speaking. (00:00:33)
The One With Christmas in Tulsa - S9-E10
Continuity mistake: After Chandler says "Merry Christmas" to the gang, they all respond - Phoebe just goes "blargh blargh", and has her hands in her lap. They all turn to look at her, and suddenly her hands are resting on the sides of the stool. (00:10:30)
The One With Christmas in Tulsa - S9-E10
Continuity mistake: When the group notice that it's snowing outside, external shots show a lot more snow than the internal shots. (00:19:20)
The One With Christmas in Tulsa - S9-E10
Continuity mistake: When Wendy is coming onto Chandler her hands are at the top of his tie. When the shot changes, her hands are halfway down his tie.
The One Where Rachel Goes Back To Work - S9-E11
Continuity mistake: Ross bends over Emma to kiss her and gets the bow stuck on his head. The bow is slightly over his left eye but in the next shot, it has moved to the centre of his forehead. (00:11:35)
The One With Phoebe's Rats - S9-E12
Continuity mistake: When Gavin and Rachel are in Rachel's office, in some shots Gavin is wearing a wedding ring. (00:03:43)
The One With Phoebe's Rats - S9-E12
Continuity mistake: When Monica goes to Rachel's office and invites Gavin to Rachel's birthday party Rachel gets up and goes to the door exclaiming "why did you invite him, I hate that guy." She has nothing in her hand when she gets up from her desk; but at the very end of the scene when she tells Monica to be quiet, she's got a pen in her hand for one shot. (00:12:45)
The One With Phoebe's Rats - S9-E12
Continuity mistake: Extended version. As Rachel says "the guy hates me", in a wide shot Monica turns to her with her arms by her sides to say "does he?". It then cuts to a shot more focused on Monica where she laughs, and she's now reaching forwards to the table. (00:13:10)
The One With Phoebe's Rats - S9-E12
Continuity mistake: At the party, when Monica and Rachel are talking about Gavin, Rachel has a napkin in her hand at one shot, the shot changes and the napkin is replaced by a drink. (00:13:20)
The One With Phoebe's Rats - S9-E12
Continuity mistake: In the one with Phoebe's rat babies, it is very obvious that the box has nothing in it. Also when she is in her apartment explaining about giving up the triplets she had for her brother she puts the box down on the table, yet when it cuts to Mike's face and Phoebe's realisation that she hadn't told him that before, the box is back on her lap. (00:14:05)
The One With Phoebe's Rats - S9-E12
Continuity mistake: At Rachel's birthday party, Phoebe reaches into the shoebox of rats, but straight away in the next shot, her hands are on the lid. (00:14:10)
The One With Phoebe's Rats - S9-E12
Continuity mistake: Phoebe is sitting on her couch talking with Mike near the end of the episode. She puts the box with the rats on the coffee table and in the next shot, she is holding the box again. (00:18:35)
The One With Phoebe's Rats - S9-E12
Continuity mistake: In the series nine episode with the 'hot' nanny, at the end when Rachel is on the veranda/balcony thing with Gavin, before he says 'I do have feelings for you', the shot is over the shoulder and he has his hand on the wall of the balcony, when the shot switches to the front angle his hand is by his side. (00:20:55)
The One Where Monica Sings - S9-E13
Continuity mistake: When Phoebe, Monica and Rachel are talking in the coffee house, a waitress walks by and in the next shot when the camera focuses on Monica, and comes back to Rachel, the waitress walks by again. (00:05:00)
The One Where Monica Sings - S9-E13
Revealing mistake: When Joey has his eyebrows plucked at the salon, it is obvious that the woman is not pulling any hair off. (00:07:00)
The One Where Monica Sings - S9-E13
Visible crew/equipment: When Gavin goes to the door to bring Rachel soup you can see a camera man's microphone in the top of the screen. (00:10:50)
The One Where Monica Sings - S9-E13
Continuity mistake: When Rachel is talking to Gavin at Ross', her position when she's sitting changes depending on the angle. (00:14:20)
The One Where Monica Sings - S9-E13
Visible crew/equipment: After Joey dips his finger into the hot wax and smears it all over his hands, when Sonya walks out of the back room we can see her tape mark on the floor, which she promptly steps on.
Answer: The statements that she's contradicting (that it is common, it happens to every guy, and it's not a big deal), are the things that a woman commonly says to a man who is suffering from erectile difficulty, typically to assuage his bruised ego. However, most men do not believe that these statements are true, as evidenced by Chandler's outburst. He's so caught up in the proof that women are lying about it that he gives himself away.
Rooster of Doom