Continuity mistake: When Anna and Kristoff fall off the cliff after being chased, they are still tied by the rope. When they land the rope is gone.
Continuity mistake: In the scene where grandpa is attempting to ship his grandson to his dad in a cardboard box, grandpa says to the two ladies who are objecting to his requests "well give me a pen, and we'll write FRAGILE on it." Shortly before he says that, the box already says "FRAGILE" on the right hand side, and then 2 seconds later the writing has disappeared. (00:31:10 - 00:32:15)
Continuity mistake: When Tom the Minion dressed as a maid is hoovering, he answers the front door by opening it towards him as does the minion who looks out of the door after Tom has been taken. In the scene with Gru sat on the steps in the rain, sad that Lucy is off to Australia, Agnes comes out with an umbrella, but now the door opens outwards.
Continuity mistake: When Teresa is yelling and hitting Jordan because he cheated on her with the blonde girl in the limo, the car disappears and reappears between shots. (01:00:35)
Continuity mistake: When Theodore goes to Amy for comfort in her apartment, there's someone (or something), walking at the front door, but then not again in the next shot. Keep your eyes top right, it's very visible. (01:26:50)
Continuity mistake: In the scene where Grug is chasing after Guy, they both wind up stuck in a tar pit. After successfully escaping they are covered in tar and Grug even gets himself stuck to Guy. In the next scene everyone is running from the exploding ground up between the mountains and both Grug and Guy are completely clean and free of tar.
Continuity mistake: When Pastor Randy hands Paul a glass of iced tea, the lemon slice falls off the glass to the ground, but in the next shot we see Paul drinking, the lemon slice is back on the glass. (00:24:40)
Continuity mistake: When Sandy takes a taxi and goes to Diane's house, as he is arguing with her, the sweat pattern on his shirt changes several times as the scene switches from him to her and back.
Continuity mistake: When Walter Mitty is on the skateboard riding towards the Icelandic town, there is a shot of him riding along wearing Nike Frees, the camera then cuts to a close up of his shoes and the board, and the shoes in that shot have changed to Vans authentic.
Continuity mistake: In the scene where Tim buys his lunch in a Pret A Manger, the assistant charges him £4.24. When he time travels back, she charges him £6.23. (01:40:05 - 01:41:55)
Continuity mistake: When James Franco is talking about jizzing all over Danny McBride, the camera goes behind Seth Rogan and you can blatantly see him laughing, then milliseconds later when the camera moves, his face is serious. (00:57:00)
Continuity mistake: In the scene where Kenny feels he's been bit by a spider on his privates and run off the bus with everyone following after him. Kenny then pulls down his pants so they can look at it. Throughout these scenes, his pants are supposed to be pulled down. Right at the moment Kenny faints from the bite, you can see that his pants are pulled up and buttoned.
Continuity mistake: In the scene where Alan flirts with the store clerk, they share a lollipop. You can hear a "crunch" indicating that she chewed the lollipop. In the next shot, she takes the lollipop out of her mouth and it is still completely intact. (00:59:45)
Continuity mistake: At the end when Frank brings a suitcase with a bomb on the plane where Bailey is pointing a gun at Sarah, he puts the suitcase on a table. When Frank drops his gun, the table is empty. The suitcase reappears a second later when Sarah goes to Frank.
Continuity mistake: In the scene when Mike is at the school door lab. When he swipes the access card the door swings out. But when the campus police try to get in it is blocked from the inside, indicating the door opens inwards.
Suggested correction: If you look carefully, you will see, that those are actually two different doors, which even have hinges on different sides. There's some space between them in the entrance to the lab, it can be seen just before Mike enters.
Continuity mistake: While Shannon and Sarah are speaking to Robin, two people (a blond white guy and a black guy with a blue satchel) pass by the trio twice.
Continuity mistake: When Kantmiss is climbing the tree, the ladder leading up is almost vertical, but in the next shot as she reaches the top, the ladder now has a significant angle to it.
Continuity mistake: Towards the beginning of the movie, Gerry's son spills hot coffee all over Gerry's shirt. He is wearing a white shirt/vest for his uniform. There is no stain or even wetness left behind.
Continuity mistake: When Dusty first takes off for the big race his "D7" on the right side of his tail disappears. (00:32:35)
Continuity mistake: After the failed attempt to drop a mace on Mr. Ginormous' head, the giant grabs Jack, Tom, and Jerry and taunts them. He then throws them onto the table and Jack's hat comes off and flies away from him. Shot changes angle to Jack trying to sit up and pop off at Ginormous and suddenly his hat is right next to him. (00:43:15)