(at around 9 mins) When Ashtray is getting a haircut from his dad, in one frame he's wearing a barber cape in the next one he's not wearing one, then right before the scene is over he's wearing it again.
(at around 1h 20 mins) During the final drive-by scene Doo Rag is seen on the lawn before Toothpick and his gang starts shooting but when Ashtray runs away from the house during the shootout, in another shot we see Doo Rag just arriving.
(at around 39 mins) When Loc Dog applies for the Motors job, they call his name for an interview before he even gave them his application that he filled out.
(at around 30 mins) When "The Man" shoots at the Asian couple in the convenience store, he is using a Beretta pistol. However, the pistol he tosses to Loc Dog is a Glock.
(at around 12 mins) When Ashtray punches his grandmother, he punches her in the left cheek, but when she gets up, she is holding her right one.
(at around 27 mins) A real Soviet era missile wouldn't have been lettered U.S.S.R, it would have said C.C.C.P, as U.S.S.R is the English translation of the acronym.
(at around 26 mins) When Loc-Dog saves Ashtray from the thugs they pull an RPG out but the rocket is loaded in the wrong end.
(at around 18 mins) When Loc Dog is pouring out some of his Colt 40 on his "dead homies," you can see two of them flinching, especially the one getting the drink poured on him.
When grandma is hopping the lowrider down the street, you can see the car's driver's front lower control arm come loose just on the inside of the wheel. You can even slightly hear it hit the ground as the car bottoms out.
(at around 1h 21 mins) At the ending scene where Ashtray's grandma shoots at Toothpick''s car, she shoots out the front right tire. Seconds later, it is revealed that the tire is inflated again.
When Toothpick's gang chants during the Double Dutch rope initiation, the gang member on the far right accidentally dropped his beanie while dancing.
(at around 27 mins) When Toothpick and his gang are leaving the confrontation with Loc Dog and Ashtray at the "40's & 9's" store, they drive in reverse in a Pontiac GTO. However, you hear a gear change - Pontiac GTO's didn't come with two or more reverse speeds.
(at around 1h) When Crazy Legs' wheelchair gets hit by the drive-by bullet you can hear him scream as he is starting to roll down the ramp, but his mouth is not open.
(at around 22 mins) Ashtray's lips don't match the line "Ooh, that's pretty."
(at around 4 mins) In the prologue as Ashtray gets out of his mother's red car, the crew is reflected in the car on the driver's side.
(at around 37 mins) After the DMV instructor robs a bank and demands Ashtray to drive off, the camera crew can be briefly seen on the side of the car.
(at around 26 mins) The boom mic is reflected on the black car.
(at around 31 mins) When they see Grandma coming up the street in her Lowrider, he says check out the 6-4. The car is in fact a 1963 Chevy Impala.
While reading erotica to his father, Ashtray mispronounces "climaxes."
(at around 4 mins) When Ashtray first arrives at his father's, he states that his father is just a few years older than he is. When his father ask him why he wasn't invited to the party (at around 1h 7 mins) Ashtray told him he had to be over 18 to attend. If that's the case Ashtray wouldn't be able to attend the party.