Continuity: When Marty is first getting ready for the beginning of the movie shoot, he is holding up clothes and he is still blue with orange hair. In the next scene when he is going to the limo, he tells Monty he was up all night with a scrub brush and a can of turpentine. The scene with him picking out the outfit was in the morning, so if he was up all night, wouldn't he have already cleaned the blue and orange off?

Continuity: When Marty Wolf gets out of his pool, his shorts aren't dyed blue. If that one little bottle of light blue dye was enough to dye Marty Wolf's skin, it certainly would have dyed his shorts.

Continuity: Towards the end of the movie Marty Wolf is chasing after some people. Spotting an empty buggy nearby, he races towards it. There are a few people standing in front of it and he pushes them out of the way as he hops in. A second later, in the next shot (which is a long shot of the scene), Marty begins to drive off - but the people that he just pushed out of the way have disappeared.

Continuity: At the premiere of Marty's failed movie, he is asking the president if he can explain his "breakthrough" on Big Fat Liar. The president raises his hand, and says "One chance, Wolf, that's all I'm giving you." It remains raised until two shots later (on Marty's line "strap on your seatbelt because you are about to be blown away,"), when it is suddenly resting at his side.

Plot hole: When Marty Wolf comes out of the pool he is blue from head to toe yet with all the swinging of his hands and dancing, let alone the mirrors in the hall, he does not notice he is blue until he has put orange dye in his hair. How could he miss it?

Revealing: Towards the beginning of the movie, Jason is seen riding his skateboard on a leaf-covered sidewalk, implying that it is autumn. But since he fails English he has to go to summer school, which makes the season the early summer.

Continuity: In the scene where Jason gets out of Marti's limo you see him going out the right side of the camera view. This shows that he is getting out of the left side of the limo, the driver's side. In the next camera angle, out of the limo, you see him going out the right side of the limo, the passenger side. If he gets out the left, like he did in the limo view, the limo would be on the other side of the street, not the one we see the limo on.

Factual error: The super glue (after sitting that long) wouldn't be wet enough for the earpiece to stick almost permanently to Marty's ear.

Continuity: The degree of blueness and orangeness of Wolf's skin and hair keep changing. Right before the first birthday party, he has bright orange hair. Yet when he leaves the birthday party, his hair is a duller orange. I don't think that hair dye wears off that fast.

Factual error: The amount of dye from the bottle couldn't possibly make Monty's entire skin that deep a shade of blue.

Continuity: When Marty is talking to the President about his 'incredible breakthrough' about BFL, Monty has her head leaned up against a chair. Marty continues talking when the camera cuts to a close-up of her. With no time in between shots to move her head, her head moves about 6 inches away from the chair.

Other: In the scene where Marty Wolf is chasing Jason on the cart. when they drive through the winter set you can see the fake snow get on the camera lens.

Continuity: At the very end, during the credits of Big Fat Liar, you can see Jason's mom over his shoulder wearing a blue dress. The flaps of her dress change between shots - when she pats Jason on the shoulder, for example, the flaps are around her elbows, but in the next shot (still looking at Jason but zoomed out a bit) the flaps are on her shoulders.

Continuity: In the scene where Marty Wolf is washing his hair, before he dyes his beard you can see it is already a slight tint of orange.

Continuity: Near the beginning where Jason is writing his paper and he is done he staples it. When the scene changes and their in the limo, the story is not stapled.

Factual error: Towards the beginning of the movie, directly after Jason's parents leave the house, Jason's sister's boyfriend drives up in an SUV to pick her up (the music in his SUV is blaring). The window on the passenger's side door is open. When Jason's sister opens the passenger's side door to the SUV, the already blaring music becomes louder, as if much more sound is escaping the vehicle. When she shuts the door after entering the vehicle, the music becomes quieter again.