The One With All The Thanksgivings - S5-E8
Continuity mistake: In the flashback where Joey sticks the turkey on his head, the subtitle says Thanksgiving 1992. However, the show started in 1994 and Joey didn't move in until the previous fall, so the earliest Thanksgiving that he was there would have been 1993. (00:04:30)
The One With All The Thanksgivings - S5-E8
Continuity mistake: When Phoebe's trying to make the TV work at the beginning, in the close-ups and the first wide shot the remote's at an angle, but in the second wide shot it's straight. It then goes back to being at an angle. (00:00:15)
The One With All The Thanksgivings - S5-E8
Continuity mistake: When Monica puts the sunglasses and hat on the turkey, she puts the glasses on where the arms are over the wings of the turkey. But in next shot the arms of the glasses are completely under the wings. (00:21:10)
The One With All The Thanksgivings - S5-E8
Continuity mistake: In the scene where they take Chandler to the hospital, Monica hands the bag of ice containing Chandler's toe to the doctor. The doctor is wearing gloves in one shot then no gloves in the next. This goes back and forth three or four times. (00:07:45)
The One With All The Thanksgivings - S5-E8
Continuity mistake: When Monica puts the turkey on her head, she puts a hat on it. In the next shot the hat is not at an angle and must be held in place. (00:19:40)
The One With All The Thanksgivings - S5-E8
Continuity mistake: When Phoebe is trying to turn on the TV, her necklace moves without her touching it. (00:00:15)
The One With All The Thanksgivings - S5-E8
Continuity mistake: The emergency room doctor's rubber gloves come and go between shots.
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