Corrected entry: In the scene where the hillbilly is chasing Nick and T, T tells Nick that the five dollars he gave the waitress was the last he had, where in fact what he gave the waitress was a one dollar bill. (00:17:10 - 00:23:35)
Corrected entry: Nick and T. robbing a store at gunpoint for two flashlights (even that T. shoplifts two biker masks earlier) doesn't make sense as they had enough money from T's previous robbery. (00:56:20)
Correction: Actually, they don't have the money that T stole from the previous robbery because Nick gave it to the gas station attendant for the $20 of gas, the shot gun, the phone that he ripped out of the wall and the sour fruity twist.
Corrected entry: When the tape of the robbery is being reviewed at the end of the movie, no one notices that the person dancing with fiery shoes is Nick. This means that it had to have been him or someone with him robbing.
Correction: I thought this as well, but the film never actually showed Nick's face while they are watching it, and besides that, they never had Nick in mind while they watched the film as the robber.
Correction: T gave the waitress the $1 bill to cover Nick's coffee. After they go out after Nick's credit card and fight they end up back in the restaurant where T has breakfast, which he used his last $5 off screen to pay for.