When Mr. Patrick is holding the french fry in front of Earl's face, depending upon who's point of view is looking at the fry, we clearly see the goop that's on it as it switches back and forth.
The "gunk" that is on the fry that Mr. Patrick is holding out the Earl increases substantially after camera angle change.
When Randy pulls Jeff's phone from the wall, in long shots the cord flies over Randy's shoulder, but in close-ups the cord is in his hand.