After Elmo shows up with a shotgun, he racks (to chamber a round) it twice without it expelling a round after the second rack.
When Randy asks Jewel what her favorite thing in the world is, he lifts his right hand to drink from the cup. In the next shot, the cup is in his left hand.
Around 16:00 in the movie, Randy get out of the bathroom with his pants on. We can clearly see that his belt is buckled. But in the next scenes, it is not anymore.
When Carl is putting ketchup on his burger, his plate spins round 180 degrees between him shaking the bottle and putting ketchup on the burger.
An elderly couple on a street corner behind Randy, disappear and reappear between cuts.
(at around 15 mins) The Bingo caller says "O-18. One-Eight under the 'O'". 18 is under "I" (range of 16-30), not "O" (range of 61-75)