Continuity mistake: At church, seated in the pew behind the Simpsons are Moe and Kirk, and in the pew behind Moe and Kirk are Disco Stu, Professor Frink, and six other people, but just as Grampa shouts, "Trapped forever," in this one shot that entire pew with Disco Stu, the Professor, and all the other people has vanished, but then the pew reappears.
Continuity mistake: While Bart watches from the tree, Homer brushes the pig's hair and carries the animal out of the room, then Bart turns to see Ned tucking his kids in bed, and when Bart turns toward Homer again the lower window has a center muntin bar, but when Bart aims his slingshot at Homer that muntin bar has vanished.
Continuity mistake: At the cabin, after watching the TV report about the "new Grand Canyon," when Marge puts on her robe there aren't any pockets, but in following shots two pockets have appeared.
Continuity mistake: While Marge and Bart are in the service station market, when Marge points to the beef jerky jars the end of the service counter is right beside the jars, but when the clerk fills the bag the counter is now much longer, past the cigar display.
Continuity mistake: There's a tiled patio at the back of the house with a total of twelve large tiles, but when the house goes down the sinkhole there are sixteen tiles in total. Plus the fact that when Bart's on the roof hanging from the gutter the tiles below are white (they also appear white when the house falls into the sinkhole), but when the dome is placed over Springfield the tiles are brownish-orange.
Continuity mistake: There's a water spigot under the window on the wall at the front of the house, near the garage door, which can be seen after the lake is blocked off, but this spigot didn't exist right before Bart skateboarded naked, then it vanishes again and reappears during the fire.
Continuity mistake: When Homer says "I'll let you hold the bomb" to Bart, the timer on the bomb is in the right corner of the bomb. Every other shot of the bomb shows the timer in the middle of the bomb.
Revealing mistake: After the crowd boos at Homer after kicking the bomb, Bart is shown walking past The Android's Dungeon and the shot pans over to show Comic Book Guy. Just as the shot begins to pan over, it can be seen that Comic Book Guy randomly pops up on screen.
Other mistake: When Homer kicks over the bomb, the time on the bomb decreases by half. Because of this, Krusty yells "Get outta here!" to Homer. However, Homer was standing in front of the bomb and Krusty was standing behind Homer, which means Krusty's view of the bomb was completely blocked, so he couldn't possibly have seen the bomb lose half of its time. He was definitely reacting to bomb losing half of its time, as he is shown looking straight at it just before he starts yelling at Homer.
Continuity mistake: Cletus is shown on a roof attempting to distract Cargill as the group was trying to climb the rope, and is still there when Cargill turns off the transmission between Springfield and Cargill. Yet when Homer says "I can't do anything right" a few minutes, Cletus is suddenly shown in the background behind Homer.
Continuity mistake: The shot where Homer kicks the bomb shows a group of people a few meters behind him. A few shots later, they are suddenly right behind him.
Audio problem: When Homer is falling down the rope, his speech doesn't match up with what his mouth is saying.
Continuity mistake: When Cletus goes to distract Cargill, a crowd of Springfield citizens go to place the KBBL news tower next to the rope so they can climb up it. They are all on the ground when Cletus starts talking to him. Cletus then says "Look what I can do with my thumb" and the crowd is suddenly half way up the rope with no time to do so.
Continuity mistake: When Homer squirts the super glue on his hand, he throws the glue container on the floor behind him. When he starts to climb up the wall, the glue's container has vanished from the ground.
Revealing mistake: After Homer knocks out the guard guarding the dome, Homer runs into the supplies shack. As he walks through the doorway, his right arm passes through it.
Continuity mistake: After the title card "Immediately" is shown, Homer is lying unconscious in the snow. Next to Homer's hood is an extra amount of snow rest next to his ear. Next shot, the extra snow has vanished.
Continuity mistake: When Homer puts the video in the VCR player, as Marge says "Homer", outside the window shows a dark sky in the background. Marge then talks for a bit and the shot returns to Homer saying "Way back." Outside the window suddenly shows a background that is partially brighter and raining.
Audio problem: When Marge, Bart, Lisa and Maggie are trying to convince Homer to save Springfield, after Homer says "That is the stupidest thing I ever heard", Marge says "Homer Simpson!" then Lisa says "We're saving Springfield." When Lisa says "Springfield", her mouth reads something totally different.
Continuity mistake: After the Alcoholics Anonymous meeting runs out of the church, Barney starts yelling and a huge crowd is visible behind him. Bumblebee Man is standing a few meters away from Barney on the end of a row. Next shot, Otto and Moe have suddenly appeared next to him as well as a huge crowd.
Continuity mistake: When the Alcoholics Anonymous run out of the church, Barney yells out "I can't take another minute in this dome!" and charges towards the dome. In the overview shot, the church is directly behind Barney. In the following shot that shows Barney hitting the dome, the background has changed completely. The church is no longer there and two houses have suddenly appeared.
Answer: Homer has been known not to make the smartest decisions, and the decisions he does make, he makes without fully thinking them through. Clearly he wanted to get some donuts as quickly as possible without thinking of any other ways, so he decided to ditch the silo in the lake as it would be the fastest way of getting it off his back, even if it's not the smartest. Also, putting that aside, he likely wanted his own pick of the donuts rather than have Lenny guess what he wanted.
Casual Person