Continuity mistake: When they film Krusty's advert in Krusty Burger, "Action" is said by the director and the only things shown are Krusty, the pig and the table the pig is standing on. Krusty then starts talking whilst filming and picks up the burger known as The Clogger. This burger was never visible during the previous shot as the director said "action". (00:14:00)
Continuity mistake: At Krusty Burger, a shot is shown from inside Homer's mouth eating a burger. The shot cuts to outside Homer's mouth where he takes another bite. He removes the burger from his mouth and it is the exact same size as it was before. (00:13:55)
Continuity mistake: When Bart shoots at Homer whilst he has the bricks on his back, the timer stops and Bart looks at the timer. In the next shot, he's looking at Homer. (00:11:20)
Continuity mistake: When Nelson yells out "Say global warming is a myth!", Milhouse covers his face and says "It's a myth, further study is needed." Right at the end of the shot, he clenches his eyes shut. Instant shot following, his eyes are open. (00:09:25)
Continuity mistake: After the Simpsons have left the church with Grandpa wrapped in the rug. Homer asks "Who wants waffles?" In this shot, there is a line along the left side of the rug, showing us where the end of the rug is located. A few shots later, as Homer says "I rest my case", the line showing us the edge of the rug has vanished. (00:06:15)
Continuity mistake: During Grandpa's freak out in church, as he says "Trapped forever", behind Kirk van Houten is Chief Wiggum. In the next shot, Professor Frink has suddenly appeared behind Kirk, and Chief Wiggum is suddenly behind Frink. (00:05:45)
Continuity mistake: As Grandpa freaks out in church, he falls on the floor after shouting "Whoa nelly!" and starts rolling around. In this shot, he is entirely on the red carpet. Comic Book Guy starts recording Grandpa and suddenly, his head is suddenly over the edge of the carpet. (00:05:30)
Continuity mistake: When the crowd throws food and drinks at Green Day's barge, the first overview shot shows various items landing on the barge. A few shots later there is another overview shot of the barge, only the amount of items has decreased. Then as one of the members says, "Gentlemen, it's been an honour playing with you tonight" and they take out their violins, all of the items on the barge have vanished. (00:03:45)
Continuity mistake: When the Green Day singer points his microphone to the crowd and the crowd sings the rest of the song, note the front of the crowd has nothing in their hands. After the singer says "We've been playing for three and a half hours. Now we'd like a minute of your time to say something about the environment", the shot returns to the crowd and everyone on the front row suddenly has a drink in their hands. (00:03:05)
Continuity mistake: After Marge says "How did the pig tracks get on the ceiling?", she turns her head to the left and opens her mouth, but in the shot that follows, her mouth is suddenly closed. (00:17:50)
Continuity mistake: When Homer is eating a Krusty Burger, the crumbs around his mouth vanish between shots. (00:13:55)
Continuity mistake: When we see the news report of the silo being lifted out of the lake, the height of the silo has significantly decreased, compared to when it was in the Simpsons' backyard - note the empty space below the drawing of the pig. (00:21:30 - 00:30:50)
Continuity mistake: After Lou chains Bart to the pole with his cuffs, the next shot shows he has a new pair, when he didn't in the last shot. (00:12:20)
Continuity mistake: In the scene where Mayor Quimby says "To make sure this wall is completely idiot-proof...Cletus", in a far shot, Cletus comes walking up with his hands empty. It then cuts to a close up and now you can see the opossum tail in Cletus' right hand. There is no time for him to have grabbed it from anywhere. (00:21:15)
Continuity mistake: At the start of the scene with the medicine woman, Homer is under a blanket. In the first shot, his entire body is under a fur blanket. But in the next shot of Homer, his arms are suddenly out of the fur blanket. (00:55:30)
Continuity mistake: Homer leaves Eski-Moe's with nothing in his hand. Then he grabs onto the back of a truck with still nothing in his hand. Homer lets go of the truck and zooms to the house and there's still nothing in his hand. But when he opens the door, there's suddenly a bouquet of flowers in his hand. (00:51:55)
Continuity mistake: When the Simpsons are driving to Alaska, Homer puts the poster of Alaska on the window. Marge then removes the poster and we see the van is going out of control. In the next shot that shows them screaming, we can see they are driving totally normally judging by the view from the back window. (00:45:05)
Continuity mistake: In the shot where we see Homer first in The Ball Of Death, two pink tents are visible in the background. But when it cuts to the wide shot, the two tents in the background have disappeared. (00:41:30)
Audio problem: When Homer fails motorcycling around The Ball Of Death, the shot cuts to inside the Ball Of Death. About a second after the shot cuts inside The Ball Of Death, Homer is heard sighing. But his mouth doesn't move. A sigh like that would require his mouth to move. (00:41:40)
Continuity mistake: When Maggie jumps into the sink hole whilst the mob are invading, Drederick Tatum (the Mike Tyson parody character) is seen standing directly in front of the dome. But after Marge, Bart and Lisa have jumped into the sink hole and it cuts to a wide shot, Drederick Tatum is seen a lot further away from the sink hole than he was previously - look closely to the right of screen in the wide shot, that's where Tatum is. (00:35:35)
Answer: I believe the joke is supposed to be that the way Texans speak is a language all its own.
Damian Torres