When Homer falls from the human pyramid to stop himself he grabs a woman's butt, a second later he had not moved and he is now holding onto a man's foot.
When we see the Simpsons in the human pyramid, Maggie is not there. However, in the next scene when Homer is told the pyramid is too short, he reaches down off-camera and picks up Maggie.
Chief Wiggum says that sugar is making Ralph hyperactive. However, contrary to popular belief, sugar doesn't cause hyperactivity. The effect is merely a placebo.
When Homer is trying to set a solo record, he is told there are "thousands" of people with no discernible talent. He replies, "Yeah, they're called Congress." The US House of Representatives has 435 members, while there are 100 senators. That means Congress is only 535 people, not thousands.
During the sequence when the towns residents are 'rolling' through town a man jumps off a building saying "goodbye cruel world" he lands into the residents rolling through town saying "hello ironic twist", this contains no irony.