Continuity mistake: When Paul Blart puts on his Hello Kitty bandaid on his arm in the next shot it has disappeared.
Continuity mistake: After Blart gets spray tanned, his shirt is a mess with the tanning spray. A few shots later, his shirt is white again. Then a few shots later, his shirt has got spray tan on it again.
Other mistake: When Paul Blart is pwning Rock Band, the vocals shows the tambourine/clap notes. Paul Blart is doing nothing that would play those notes (singing or pressing the "a" button).
Continuity mistake: When the bad guys are clearing the mall, the camera follows "Rudolph" as he clears an exit on his skateboard. As he starts to clear the exit a young man with a black jumper with a white top half can be seen on his feet moving away. In the next shot he is sitting down with a bag on a bench and then gets up to leave. (00:39:35)
Continuity mistake: When Paul puts the plaster on, a clean patch appears on his arm that wasn't there before. (01:02:00)
Visible crew/equipment: When Paul is singing while playing the guitar of PlayStation 3's Rock Band, a crew member's face is reflected on the TV set.
Other mistake: When Paul is putting on the Hello Kitty bandaid, you can see the outline on his skin from another bandaid, from previous takes of this scene.
Continuity mistake: When Paul and the guy are fighting next to the air con intakes, the speed that the fan is spinning changes between the close and far shots.
Continuity mistake: When Blart applies the plaster, his sleeve is up. Camera cuts and it's down. (01:02:00)
Factual error: When Mya points out his Loch Ness tattoo, and asks when he got it, and he says the night before, it would not be healed as it is. It would still be red, raised, and be covered to protect it. Also, later in the movie when he is on the ground and we see the large tattoo across the whole back, this would also be impossible as a whole back tattoo would take at least two or three long sessions, and this movie takes place over just a couple of days.
Factual error: Paul has hypoglycemia. When he eats the lollipop off the floor and gets up instantly, this would never happen as it takes the sugar a while to get into the bloodstream. He would never be instantly cured.
Visible crew/equipment: When Paul Blart and the bad guy fall through the skylight into the ball pit, Paul's scooter follows. As the scooter falls you can see the cable that is lowering it. (01:01:05)
Continuity mistake: When we see the dog chasing Paul, it is sunny. In the close ups of the dog, there are no shadows from the dog as there were in the previous shots. (00:06:50)
Factual error: The movie's set in New Jersey, but EASCare, the ambulance service used in the last scene, is a company out of Boston (where the movie was filmed). Also, the license plate on the ambulance has a registration sticker, which New Jersey hasn't used in many years.
Other mistake: The glass in elevators is tempered. It would not have shattered when the robbers pursuing Paul crashed into it.
Other mistake: When Blart and the SWAT guy are pursuing the bad guy, they have a blue police light on top of the car (the magnetic kind). Interior views of the car show blue flashes on their faces, which is impossible with the light being on the roof. The exterior shots confirm that the inside of the car is completely dark. (01:21:30)
Other mistake: In the beginning of the movie, Paul is at the NJ State Police training grounds. The training grounds, while near the ocean, do not have any islands just off the coast, nor is the ocean water nearby. The police cars used are painted light/metallic gray Massachusetts State Police colors with a blue stripe down the side. NJ State Police cars are white with red or red/blue lightbars with a blue & gold triangle logo on the front doors.
Continuity mistake: Near the beginning, Paul is putting peanut butter on his pie. The amount significantly changes from the point when he puts it on until the final scene. At first, there is a lot of peanut butter, then there is only a little.
Continuity mistake: When Paul hits the glass door of the shop, he gets thrown back and his walkie-talkie from his shoulder falls off. When he stands up again, it's back on. (01:03:10 - 01:04:25)
Continuity mistake: When Paul hides halfway in the air duct, his feet are hanging down when seen in the exterior shots. When seen from inside the duct, his feet are tucked up behind him.
Answer: Paul explains to Pahud that it's a misunderstanding, and Pahud then makes Paul Blart his homie.