Corrected entry: After Lloyd returns from the bar after waiting for Mary for hours, he and Harry laugh about the fact that its 10pm she meant to meet him and not 10am. Harry then says "Well you have your night sorted, I'm off to watch a flick" implying that Lloyd had a date with Mary that evening. But Lloyd then puts TurboLax in Harry's drink as Harry goes to get ready to pick up Mary. It was Lloyd who had a date with Mary and not Harry.
Corrected entry: In the scene where Lloyd asks the old lady to watch his stuff so that he can break a dollar, he leaves with the big hat on. But when he gets back to his apartment and is crying about being robbed by a sweet old lady, he is not wearing the hat. There is no way that she was able to steal it from him when he left her. (00:15:20)
Corrected entry: Why don't the "beer" bottles on the floor of the van fall over? When the cop stops Harry and Lloyd the bottles are all standing perfectly upright and there has not been any spillage on the floor. Bear in mind that before this they had been driving on the verge and stopping and swaying when the cop tells them to pull over. And Harry is only holding 3, and yet 6 appear on the floor. (00:26:40)
Corrected entry: Right before Harry is telling Lloyd that he doesn't bet, they show an aerial shot of the van near a pond and a bridge, showing that they had already made it past this point. But then when Joe pretends to be a hitchhiker, he's in the same spot where the aerial shot was shown. Joe is being picked up by Harry and Lloyd at a place they have already passed.
Corrected entry: The 'Gas Man' thinks Harry and Lloyd know who he is because of the notice they left at the door of their apartment which was directed towards the gas man. But he still thinks it's a good idea to hitch a ride on their van. For a guy who thinks Harry and Lloyd have been following him around for weeks, it's not such a good idea.
Corrected entry: The goons' plan to infiltrate Harry and Lloyd in the van doesn't make sense. When Mental learns that the duo thinks that he's the Gas Man, he comes to the conclusion that they have been followed (by Harry and Lloyd) "for weeks." But then, he decides to confront them face-to-face, which makes no sense but to move the story along.
Corrected entry: When Harry, Joe, and Lloyd are at Dante's restaurant, notice the position of the brown pitcher sitting on the counter. It's almost in between Harry and Joe. When Joe moves the hot peppers, after Harry and Lloyd start gagging, the brown pitcher magically moves closer to the peppers. (00:41:40)