Continuity mistake: The boys try to drug Mike Tyson's tiger by putting roofies into a piece of steak. When Alan puts the pills into the steak you can see that the meat is extremely soft; he pushes the pills in easily with one finger. When Stu brings the steak into the bathroom it's clearly a stiff piece of steak and not the same one.BocaDavie
Continuity mistake: The morning after scene opens with Stu laying on the floor of the hotel suite. There is a chicken about 2 to 3 feet to the left of Stu about even with where his head is on the floor, but when they cut to another camera angle showing Stu getting up the chicken is now 2 to 3 feet directly in front of him rather than 2 to 3 feet to his left as previously shown.
Continuity mistake: In the beginning when Phil calls Tracy to explain they cannot find Doug, the three guys in the background are in a very different position than at the end of the movie during the same time period. In the end the drug dealer walks forward towards Stu and Alan and then Stu begins running over to Phil. In the beginning all of the guys in the background are farther apart during the same time of Phil's phone call.
Continuity mistake: Once the naked guy is let out of the trunk and runs off, Alan is sitting on the ground with his back resting against the front tire in one shot, then against the car just behind the wheel well in another, then resting against the tire yet again in another.
Continuity mistake: In the opening scene when Phil calls Traci, Drugdealer Doug is urinating in the background for almost the entire scene. Later, when the scene is playing out again, Drugdealer Doug zips up and walks back to the car after Phil says "We f***ed up," which is the second line of the conversation.
Continuity mistake: In the scene after the naked guy jumps out of the trunk and they recover from his tire iron. The sun magically changes from high in the sky to almost sunset and back again through the entire scene.
Continuity mistake: At the beginning, Phil says to Tracey on the phone regarding the wedding, "That ain't gonna happen." In the end when we loop back to that scene, Stu tackles him before he can say that line.
Continuity mistake: In the scene where Alan says Doug is clear to move into the right lane, right after the truck starts to swerve, the camera switches to showing Phil and Stu. There is no truck in the frame, but when it shows Alan and Doug, you see the end of the truck passing them.
Continuity mistake: In the scene in the police station when the two cops have the taser class in front of the kids, Alan gets tased in the neck and fall on top of the table in front of the classroom and his arms arms are facing upward toward his head. Moments after that, there is a shot from the back of the classroom and Alan's arms are in a normal position by his side.