Revealing mistake: When Marcus (dressed up as Tiffany) is braiding Karen's hair, you can easily tell that the corn-rows were already done, and that the hair that is not done is a wig. You can see the line where the wig starts. Also, it's probably a wig because when Marcus (as Tiffany) is braiding the hair, he just looks like he is moving it, and that the braids are already done. (00:49:25)
Revealing mistake: When one of the 'Wilson' sisters leaves with Latrell for their date (after he starts singing to her), the car they get into is supposed to be valet delivered just before they step into it, yet when it pulls away there is a visible dry spot on the road beneath it. Clearly the car had been parked on that spot for long enough that the heat from the engine dried the wet pavement underneath it, which would take far longer than the length of one song.
Revealing mistake: When the dog is dragging Kevin by the leg, you can see the padding underneath the pants leg. (01:09:50)
Revealing mistake: When Marcus is fighting the ice cream man and knocked over the counter he has on white socks and black shoes. When he gets back up he has on white shoes and no socks.
Answer: I think the song you mean is "Get Low" by Lil' Jon and da eastside boyz.
Latin Thugs Cypress Hill.