In the extended scene where Guy pretends to have hit Chaitanya with his car, he squirts ketchup on the bumper of the car, as well as Chaitanya's face, to look like blood. When he picks Chaitanya up and puts him in the car a few minutes later, the bumper of the car is clean.
During the diner scene with Chia and Guy, when the mother comes to talk to Guy, Chia is sitting with his back against the seat, the camera angle changes and shows Chia then sitting forward with the menu in his hand. The camera angle changes again, and Chia is sitting back against the seat again with no menu. Once again, the angle changes and Chia is sitting forward again with the menu in his hand again.
As Guy and Jenny are driving away from the first spelling bee, a woman spits on the driver's window which sticks to that window, but it's immediately gone right after this as a man throws a folding chair at the front windshield which cracks that window.
The definition for "Infinitesimally" is wrong. The word is an adverb; the definition given is for the adjective.
The only accepted format in a spelling bee is for a contestant to repeat their word, spell it, and announce it again. But when Guy Trilby is called in round 2 to spell Floccinaucinihilipilification, he simply spells the word and, once told he is correct, exits the podium and returns to his seat. In fact, this happens more than once in the film.