Continuity mistake: Near the end of the movie Joe wakes up at Brandi's house and they run out to find Joe's "hemi" sitting in front of the house. The camera shot shows the car from the right side, and you can see the rear-view mirror attached to the windshield. And shortly afterward when they all get in Joe's car, another camera angle shows the mirror as well. But when they're speeding away from the house the camera angle from the front of the car shows the mirror is no longer there.
Other mistake: When Joe falls on the bungie, we see him hit his head in an entirely vertical position with his head at the top. This could not have been achieved considering the position he was in in the shot before.
Visible crew/equipment: In the scene where Joe goes to Buffalo Bob's house, as he is pulling up to the house you can see the shadow of the camera man in the passenger's seat.
Continuity mistake: At the croc farm, Joe is explaining the rules. Just after he says, "I'm number one," the shot cuts and his cigarette has moved instantly from his hand to his mouth. (01:03:40)
Continuity mistake: In the oil well scene during the fight, Joes coveralls have a bright clean patch on the back, but when the bad guy throws him to the ground the patch is dirty, a few seconds later as he kisses the girl and shares his skoal with her the patch is clean and bright again.
Plot hole: The scenes involving Kickin' Wing, Clem, and the radio station are supposed to be years apart. When Joe is driving to the Hall of records, Kickin' Wing states that the incident was "more than ten years ago." Joe was abandoned in 1979, meaning this scene takes place between 1989 and 1993. In the scene where Joe denies that he saved the kids (from the gas), he refers to the incident as "15 years ago" meaning the scene takes place in 1994. By the time he gets to telling his story on the radio, it is 2001, and curiously, Joe never seems to age at all in between that time.
Continuity mistake: After being captured by Buffalo Bob, Joe Dirt is put in a large hole, where Bob forces him to rub lotion all over himself to skin him in exchange for giving him Auto Trader magazines. Joe is reading one right before the police come, but when the shot changes, it has disappeared.
Revealing mistake: In the scene where Joe talks to the mean parking guy and then speeds away spinning his tyres, If you look at the pavement there is already a mark where the car had burned the tyres. The shot had been tried once before, leaving almost identical marks from his tyres.
Continuity mistake: When daddy tells Joe & Brandy he's taking the dog hunting & opens the car door, Charlie's collar has a buckle to the back. Watch Charlie's buckle, It changes from back to front to back again. (00:18:45)
Factual error: At the end when Joe, Brandy, Clem and Charlene, the alligator woman are in Joe's 1967 Plymouth GTX, Robby claims his car is faster. Charlene chides back about his Trans Am, saying 'you think you can match that little old slant six against his 426 Hemi?" Pontiac Trans-Am's did not come with slant sixes, a Dodge motor. His was obviously a V-8, and would have most likely have been a 400, but we get the 'yours is really small' reference.
Continuity mistake: At the end of the film as Joe and "family" are getting into the convertible, Christopher Walkens' character starts to get into the car and has one leg fully into the car, the next shot shows him still a few feet from the car and starting to lift his leg into the car.
Continuity mistake: When Joe Dirt meets the girl at the fair and is talking to her, in one shot her top straps are down, the very next shot she is pushing them down.
Continuity mistake: In the scene where Robbie is reading Joe the note from Brandy, Joe has dandruff on his shoulders. In another shot in the same scene, the dandruff is gone.
Factual error: When Joe is at the dealership talking about the Rambler, the dealer says they came with a 289 automatic with 3 on the tree. It is impossible to have both an automatic transmission and a "3 on the tree" which is a manual transmission, at the same time.
Revealing mistake: When Joe is on the bridge and about to jump, the cop ropes him with a bungee cord. It's a single-stranded cord with a loop like a lasso. When Joe falls, however, it is a multi-stranded bungee cord with a proper ankle wrap. Obviously, it wouldn't be safe if the stunt man jumped with just a lasso, but it's obvious that it's two totally different ropes.
Factual error: In the scene where Joe Dirt is talking to the sales rep at the dealership about who ordered the Rambler wagon, the sales rep mentions it came with a 258 cubic inch engine. No Rambler ever came with the 258 six. American Motors (makers of the Rambler line) came out with the 258 in 1971, 2 years after the last car with the Rambler name (the Rambler American), was sold in 1969. Although I was impressed that they bothered to mention an actual American Motors engine, it's still not correct.
Continuity mistake: When dealership guy says the best he can do is give Joe a print out, his hands never touch any keys to start printing the document. (01:01:35)
Visible crew/equipment: When Joe is having sex with the girl after she says she is not his sister, there is an outside shot of the shack shaking with a lamp rocking back and forth. If you look carefully, you can see the filament used to make the lamp move.
Continuity mistake: Seen from the hot air balloon, the passing airplane is a 747. In the close-ups of the cockpit, the plane is a Convair 880, as seen by the distinctive window arrangement.
Continuity mistake: The Indian's braids change length and density from his initial meeting with Joe to later scenes.
Answer: It's not so much a joke with a punchline, but more like a funny phrase. He was affiliated with the mob, and as such, has most likely been in violent situations. He asks "does your mother sew" and then punches his refelection in the fire extinguisher case (someone's face if a fight was really happening). The "get her to sew that" comment implies that the person he hit would have needed stitches. (thus the reference to sewing.)
Jazetopher
He was referring to fixing the hole left in the clothes after being shot.