Corrected entry: Phoebe shows Ross' invitation to everyone, stating "Ross let Ben address mine." The envelope has poor kid like handwriting. The address is a 4 line address and the invitation also has stamps on it. When the camera comes back to Phoebe, she's holding an envelope with just her name on it, with no stamps. When she puts down the envelope by her side, the 4 line address is back.
Corrected entry: Towards the end of the episode, when Chandler comes into the apartment to talk to Joey about his kiss with Kathy, Joey turns the TV off and places the remote on the counter. However, the TV is suddenly back on after Joey asks, "Is that why you bought all this stuff?" (referring to the furniture), and then Joey turns it off again manually.
Corrected entry: The wedding is threatened because Ross, Emily, and Monica discover that the location has been torn down a few days early. However, when one plans an event, especially a wedding, one puts down a deposit to hold the location, signs a contract, and has all of that in writing. The church would not have allowed the tear-down to happen early as they'd be in breach of contract for accepting money and then allowing the church to be torn down before the wedding. And if they had broken the contract, Monica would have been screaming about it and demanding a refund.
Corrected entry: In the scene where Joey tells Ross that the stripper stole the wedding ring, when Chandler says, "So you might say, it's a magic ring", you can see Joey starts laughing in the background. In the next shot he starts laughing again.
Corrected entry: When Phoebe is considering carrying her brother's babies, her mother gives her a puppy to look after. Chandler seems very comfortable with this puppy. However, in Series 7, when Phoebe brings a dog back to Monica's apartment, Chandler says he is terrified of dogs - especially puppies.
Corrected entry: When the doctor is explaining to Phoebe about the triplets she says that "giving birth to three babies is not that different than giving birth to one". However, most triplets are born prematurely and by Caesarian section (which the doctor doesn't mention).
Corrected entry: Phoebe goes to Rachel, and to comfort her says "Ah Pheebs," and acts surprised when Rachel tells her that Pheebs is short for her name and is not just what they call each other. However, in the previous episode, The One With Rachel's Crush, Rachel says "Mr. Pheebs" and we see Phoebe obviously happy that Rachel has used her nickname as her false identity.
Corrected entry: When Chandler is at the airport with Janice there is a last call announcement for his flight to Yemen, and Yemen being mentioned as the destination in the announcement. However there is no such city as Yemen (the capital of Yemen is San'a) and the destination of a flight should be the destination city, not the country.
Corrected entry: When Ross, Emily, Phoebe and Joey go back to the coffeehouse after Ross gets the crap beaten out of him, he says to Emily: "are you kidding? I just made a man twice my size cry. I haven't done that since I was four and I washed my Dad's Porsche with rocks." But in series two when Richard has a 'twinkie in the city'(Monica), Jack Gellar comments on how "I turned fifty, I got the Porsche, you've got your own little speedster." If Jack Gellar was fifty when Ross was four, that would make him around seventy-six. He's looking pretty good for a seventy-six year old man isn't he?.
Corrected entry: One best man (Joey) walks down the aisle with the mother of the bride and the other (Chandler) comes in with Monica which is completely wrong. The best man (or men) should be at the front of the venue with the groom - they are there to support him.