Near the end of the film, Earl throws the packets of drugs on the ground. But as the Cadillac drives away, all three packets of drugs are missing.
When Earl and Junior are outside the bar discussing how Junior got his money, Junior says, "I'm not dumb, you're dumb" and Earl smacks him in the head, leaving his hair sticking out. When the camera shows Junior again moments later, his hair is back in place like nothing happened.
In the scene where Tinker takes Earl and Baby to the bowling alley to pick up the money, the length of the cigarette in his mouth changes form short to long.
When Earl and Jimbo are bowling and Jimbo is throwing his ball, the lane lights over the pins are off on all the lanes including the one they're using. Which means the lane is not on so the pins cannot be reset and the ball will not be returned. However when Jimbo gets mad at Earl and walks away from the lane the lights over the pins are on.
When Earl, Jimbo, Tink, and Junior pull up in front of the Mexican's house, Tink lights a cigarette, then you see Earl grab an unlit cigarette from his mouth and says "you know there's no smoking in Jimbos car".