Audio problem: We hear Mike cock his two guns a variety of times in a row during the scene when he is threatening Jojo and Marcus. (01:25:25)
Audio problem: When Noah and Casper follow Julia on the roof and then narrate to the audience her amazing off-screen escape out of their range of sight and fire, Casper says two lines ("I can't believe she made it!" and "Jesus!") without even moving his lips. (00:28:55)
Audio problem: When Mike and Marcus are driving in Marcus's car, just before they sing Bad Boys, in the shot over Mike's shoulder we see that what he is saying does not match the movement of his mouth. (00:22:40)
Suggested correction: But Will Smith is not speaking in that shot. Martin Lawrence is saying something corny ("I'm a baaad boy") that is the cue for the song. Smith is just mouthing under his breath.
Audio problem: When the bad guys attack the main girl's house, one is heard to be pumping his shotgun between shots. The gun is a SPAS-12, and the pump-action is only used when firing non-lethal rounds; otherwise it fires semi-automatically.
Audio problem: When the Captain is on about the Heroin being stolen he says something along the lines of "we got nothing, and he left us a big f*** you". When he says "we got nothing" his mouth doesn't match the words on the audio. (00:14:25)