Continuity mistake: In the scene where Tom, Jerry and Dan go into the tree house after the funeral, it is dark and they have flashlights. Then a second later it is light outside. (00:10:45)
Continuity mistake: While up in the Fort Cooper tree house, after the three friends get their treasured possessions back, Dan reaches down to pick up a mix tape with the DJ intros on it. When he picks it up, C-3PO is still in his right hand, but from a different angle C-3PO is not in his hand with the mix tape. There is not enough time for him to put C-3PO down. Then after Jerry unfolds the map, Dan doesn't have the mix tape in his hands. (00:11:40)
Continuity mistake: When Matthew Lillard is talking about not having responsibility and that surfing is what he loves while the guys are by the camp fire, his sweat jacket is unzipped in one shot as he lays back. The next shot it is zipped up completely. After he stands up the zipper is now unzipped halfway down his sweat jacket. (00:26:30)
Continuity mistake: After the canoe overturns and one of the trio gets on and surfs on it, watch his blue shirt as it is wet, to dry, to wet, throughout the rest of the river run. (00:36:25)
Continuity mistake: The 3 guys have just gone through some heavy rapids. As the rapids slowed two of them are on top of the canoe. They call out for Tom and then again for Tommy. Between the two call outs the shot changes. In the first shot the river is still flowing swiftly. During the next shot when Tommy is called and found under the canoe, the river is at a stand still. This scene was filmed in 2 different parts of the river. (00:36:50)
Continuity mistake: In the pot shack scene Dax Shepard is holding the package of pot to his side, you see him slowly move it behind his back to hide it from the two hillbillies. In the next scene, after they flash back from the hillbillies, it's back at his side and he's once again slowly moving it to his back. Shepard, and the other cast, admit this is a mistake in the commentary. (00:42:20)
Continuity mistake: After the two hillbillies return to their burned-out field of pot, you can see them stepping on lots of burned tree branches thicker and longer than anything that could have come from one of the plants. What are tree branches doing in a clearing? (00:47:20)
Continuity mistake: When the guys are in the tree house right after Dan tells the girls about using the pussy willow reeds you can see Tom just about to take a drink from a canteen, then maybe a second later in the very next shot it shows Jerry taking the canteen from Dan and passing it on around the circle. (00:55:10)
Continuity mistake: When Jerry is using the radio, the cord has a little bit of cloth near the mic end. Then when Jerry gives the mic to Flower, to give the location, the whole cord is covered in cloth. (00:57:25)
Continuity mistake: In the treehouse he picks up the lock box, sets it on the floor and the lock is unlocked. Then they say that they don't have the code to open it and have to bust it with something. (01:27:00 - 01:34:00)
Continuity mistake: Near the end, when Tom, Jerry, and Dan are about to be shot by the two hillbillies and the cop, there is a brief scene that shows all three guns being loaded from a side view. The gun closest to the camera is a handgun. When the camera zooms out, all three men have rifles. There is no handgun to be seen. (01:27:40)
Continuity mistake: We see Tom standing in the river catching fish, yet when they start running from the bear, the water is gone.
Continuity mistake: When the trio fall down the shaft, a small wooden beam falls on Tom's leg, but when the shot changes the beam is next to his leg.
Continuity mistake: Right after the 3 guys fall off the waterfall, Tom lays on the ground. You can see that his pants have a lot of dirt on them. But in the next scene Tom is getting up to make his point to Dan, and there is no dirt on his pants.
Continuity mistake: When the three first arrive in the small town, Jerry walks past a garage as he is talking on the phone. From the outside you see two guys standing on either side of a truck. When they show them in a close up, they are standing together.
Continuity mistake: Right before they encounter the hard rapids, just before they flip over, Dan's hat disappears and reappears between shots.