Continuity: The number on Pheobe's cab changes throughout series 2 and 3. 7E85 and 2X85 respectively.

Continuity: When Ross and Rachel are arguing about Rachel telling Phoebe about his fantasy, Ross takes a popsicle out of the freezer and bites it. In the next shot, the popsicle is whole again, with no bites, and Ross takes another 'first' bite out of it.

Continuity: In the scene where Janice tells Joey about Joey and Janice's day of fun, the position of her hair changes from in front of her shoulders to behind several times between shots.

Continuity: When Joey says "we'll call that plan B, all right?", Monica has her chin in her hand. When it cuts to a different angle, she's got both arms on the table. Rachel also goes from having both hands clasped under her chin to having one arm resting on the table and one reaching for coffee.

Continuity: Near the start when Janice is touching Joey's cheek in his apartment, Joey is seen from the front, and he is not holding anything in his hands. He is then shown from the side and he is holding a box of cookies or something similar.

Continuity: When Joey refuses to give Chandler the chair, Phoebe gets hummus on her dress, but in some scenes the stain is much smaller than others.

Continuity: In the scene where Chandler sits on Joey in an attempt to regain possession of his seat, the shirt sleeve on his left arm becomes unrolled and slides down. When he stands up, the camera cuts to face Ross while he is giving out directions, leaving Chandler's back to the audience. Chandler's sleeve is now rolled back up. The sleeve remains rolled for the rest of the sequence.

Continuity: The amount of fat in the glass differs throughout the length of the episode.

Other: When Monica beeps into Richard's machine and changes the outgoing message, she always presses the same two buttons when trying to interact with his machine, but gets a different result each time.

Continuity: When Phoebe asks Monica what gets out hummus, Monica comes out of her bedroom. In the wide shot she's standing next to Ross, in the closeup he's suddenly holding her by the arm.

Continuity: When Ross asks Chandler "you took his underwear?", the angle changes halfway through the line. Chandler's hands go from in front of him to being in his pockets.

Continuity: When they are talking about sperm donation, Joey is eating a cracker with jam on it. Between shots it instantly rotates in his hand. You can tell because the jam goes from being on the top to the bottom side, and because of the way he is holding it you can see there is only jam on one side.

Visible crew/equipment: In the scene where Chandler is talking to Rachel and Ross about how Janice thought that he had somehow called her fat, if you watch Monica's closet in the back, you can see the shadow of someone walking past, under the door.

Continuity: Right at the end when Ross hits Chandler with his rolled up magazine, he only folds over one-third of the magazine onto the middle third. When it cuts to him hitting Chandler (without a time delay between him hitting Chandler and folding the magazine) the magazine is fully folded over.

Continuity: When Pheobe is talking to Ursula's stalker, her hands move places with no time to do so.

Continuity: When Rachel and Monica are comforting Chandler, just before he gets up Rachel has her hands on the chair but when Chandler gets up Rachel's hands change position.

Continuity: When Chandler is getting relationship advice from Monica and Rachel near the end, the label on the ice cream tub he is holding changes position depending on the whether the shot is close up or not.

Continuity: After Chandler chases Janice down the street and Rachel gives him a tub of ice cream, the tub is green with a white label. After Rachel asks him how he left it with Janice, it changes to purple with a label, then purple with no label, then back to the original after he is told to act aloof.

Continuity: When Ross shows G.I. Joe to Ben, the Barbie's legs are pointing towards the refrigerator. In the next shot, they are suddenly pointing the opposite way.

Continuity: When Monica is telling Susan and Carol that Ross used to dress up as a girl, Ross goes over to the table and picks up a drink. When he picks it up it has a cork in it. In the next shot he has the cork already in his hand.