Brian agrees to give Stewie $8 if he runs through the mall naked. After doing so, Stewie counts the bills Brian gave him. He clearly fingers through 8 bills and there are still a number of bills left in his hand.
When Goldman is singing "The Morning After" at the karaoke, they pan in on him singing. On the karaoke-tv screen, there aren't any lyrics anymore.
In the scene on the tour bus, Meg is first seen turning on the TV in her normal clothes, but when Lois is talking to her, she is wearing a pink dress.
When the karaoke is going at the Drunken Clam it is nigh time, but when it goes to the church it is sunset.