Continuity: When we first see Chandler in his office, his sleeve is rolled below his elbow. In the next shot, it is above his elbow.

Continuity: At the end of the episode when Phoebe asks Monica if Alan mentioned them, the towel on the table is next to Phoebe and is untidy. In the next shot, it has moved closer to Chandler and is folded neatly.

Continuity: When Phoebe visits Lizzie, Lizzie is feeding the pigeons with her right hand. In the next shot, a plastic bag has appeared in her left hand from nowhere.

Continuity: When Chandler says he won't quit smoking, he holds his hands out. In the next shot, they are lowered between his legs.

Continuity: When Joey comes into Monica and Rachel's apartment and sits down, he puts his towel on his lap. In the next shot it is over his shoulders, then back on his lap again.

Continuity: After Chandler shouts at everyone because they are complaining about his smoking, there is an awkward silence and we see a shot of Rachel leaning on the sofa with her arms spread. In the next shot she isn't leaning on the sofa anymore.

Continuity: When Phoebe sees Lizzie, she is sat near her trolley feeding pigeons which are out of shot. In the next shot two pigeons have appeared next to the trolley.

Continuity: When Rachel says, "You can never be too Alan.' Ross is holding out the yellow pom poms. In the next shot they are pointed at the floor.

Continuity: When Chandler smokes the cigarette at the start of the episode, keep an eye on Joey's arms. First he moves his arms between his legs, then his left arm moves onto his knee between shots.

Continuity: When Ross said his parents sent their dog away, Chandler is holding onto his right foot with his hand. In the next shot, the foot is gone and his arm is in a different position.

Continuity: When Chandler talks about parents telling their kids they've sent the dog off to a farm, his right leg is on the floor. In the next shot, it is crossed over his left leg.

Continuity: When Lizzie holds the tin foil hat up to Phoebe, in one shot she holds it out with one hand, then in the next shot she is holding it in both hands.

Continuity: When Ross starts talking about his dog at the start of the episode, Monica has her left foot on the floor and she is holding onto her right leg. As Ross says 'send' both of her feet are on the sofa and her hand is between her legs.