Continuity mistake: As Hank is having his discussion with Cotton in the Casino you can see Cotton's red (playing) chips in front of him. In one shot Hank stands up and the angle shows Cotton from over Hank's shoulder and the red chips look black and badly damaged. The next shot from the same angle the chips are back to being red and completely fine.
Continuity mistake: When Peggy brings "Ol' Spanky" to class for the first time, the writing on the blackboard has quite a bit of space to the right of the blackboard. As she is telling of Joseph, the second blackboard is almost right next to the first blackboard and the first blackboard doesn't have the writing on it anymore.
Continuity mistake: As Coach Sauers is making them run up and down the stands you can see Bobby with all the mud on his face and body just reaching the bottom of the stand and then in the very next shot hes all of a sudden reaching the top of the stands with Joseph.
Continuity mistake: During Peggy's visit to Megamart she meets one of her fellow teachers when she is about to go down one of the aisles. When the shot shows Peggy talking, you can now see the aisle of products is now behind her even though she didn't move. At the end of the conversation, Peggy gives the woman a pin and the two of them have now moved again and are at the very end of the aisle that Peggy started in.
Continuity mistake: In the final classroom scene when Peggy has a mace, she swings it very hard and rips off the cartoon paper on the map of Europe. It then goes to a quick shot of the class and back to her in less than a second. Yet she is now holding the mace steady in her hand, even though you wouldn't be able to stop a mace that soon after swinging it that quickly. The cartoon paper she ripped off has also disappeared.
Continuity mistake: During the scene where Hank is talking to Kahn in the restaurant bathroom you can see a black rubbish bin below the hand dryer next to the entrance of the bathroom. About halfway into the scene Kahn starts looking into the mirror and the garbage bin has disappeared. Throughout the rest of the scene the bin never reappears.
Continuity mistake: As Coach Sauers is quitting the shoe store, he rips the whistle off his chest and breaks the neck rope and bangs it down on the counter. When the clerk returns the whistle to him and drops it in his hand, the rope is not broken, as you can see the loop on the rope when it drops.
Continuity mistake: During the scene where Peggy and Hank are enjoying a spa, Hank fills up the champagne glasses with beer. He stops pouring a bit before the top of the glasses and there is very little foam on the top. In the very next shot both their glasses have foam overflowing from it.
Continuity mistake: Before Peggy leaves the soccer mums and goes to watch football again, the woman in the green sweater is holding a coffee cup that is of a pale brown color. When the shot goes to a close up of her talking, the color is now red. The next time you see her holding the cup, it's gone back to being a pale brown color.
Continuity mistake: As Kahn breaks the ceramic radio panda at the garage sale there are about 3 people behind him. He then starts to tell everyone to leave and then there is an aerial shot and the 3 people that were behind him have disappeared even though no one moved whilst he was shouting.
Continuity mistake: As Kahn is putting the golf club away after Hank has just used it there is a groove in the locker to support the club. Kahn seems to place the club horizontally in the locker no where near the groove and to the left of it. The next shot its now sitting in the groove vertically.
Deliberate mistake: In the scene where Hank is mowing his and Minh's (Khan's wife) lawn he mows straight across from Minh's lawn to his own lawn. This would be impossible as in every episode including this episode (before and after this scene) there is a fence separating his house and Khan's house. It was likely removed to simplify Hank's going back and forth between the two ladies as they try to gain his affection with food and beer.
Deliberate mistake: As Luanne is putting the dirt into Bobby's fruit pie you can see she rips open a large part of the packet. Yet in the next scene when Bobby is about to eat the pie there is no sign of where Luanne ripped the packet. Its likely this was deliberate as the joke in the scene was Bobby and Luanne's constant attempts to get back at each other, if they had left the large hole its likely Bobby would have not fallen for Luanne's prank.