Other mistake: When B-Rad is going to battle the other rapper and has to call the side of a coin that will come up after a flip, he calls tails and elects to go second. There are several mistakes here. First off, the guy who flips the coin doesn't even check to see which side the coin landed on. Secondly, the coin somehow disappears - the guy goes right on talking into the microphone in the next shot with the other hand not holding the coin. Lastly, which hand the microphone is in changes instantly from shot to shot.
Other mistake: When Tec is making the ransom call for B-Rad, the Mexicans show up and start shooting. Tec's friend ducks and starts to run before the shots are fired.