Continuity mistake: Throughout the movie in several scenes the living room has 2 couches even up until the Parks are getting ready to leave for their camping trip, 1 big one and one small. The very next scene when the Kims are getting drunk, the small couch has disappeared. This must be to make room for the Kims to slide and crawl out from under the table. The strange thing is when the Parks come back home, they don't notice that one of their couches is missing. It remains missing until the end.
Continuity mistake: At the skate park (which is supposed to be Thursday after school), Max is wearing the clothes he wore on Wednesday and Friday - not the clothes he wore in school on Thursday.
Other mistake: The opening (like most of the movie) does not make much sense, so you can pick your kind of mistake here; the special effects are cartoonishly bad throughout the big firework explosions. When John Abraham is knocked through a window by a rocket (which takes off with a 270° turn without even rising) to the face, he gets up unscathed and starts screaming for Junky and Chandu. The camera moves from them to him and he's running with the girl in the red costume in front of him (which was way behind, safely, when he crashed through the window, so already that is wrong), and then there's a wider shot. In that shot, you can tell that Adams is bumping into the same people as before and the distances between the extras are all wrong. (00:06:35)
Other mistake: Jodie mentions wearing shoe size 13 more than once in the movie yet look closely and those are only size 10 shoes.
Continuity mistake: When Aunt Sarah arrives, she dumps her luggage in the hands of Jim and then passes him to his right, leaving him between herself and the door. In the reverse shot, Jim is on the opposite side. (00:29:15)
Revealing mistake: After most of the people trying to hang onto other people holding onto the ascending helicopter fell off, a downward view from the helicopter showed a man effortlessly hanging onto the landing skid and a woman just as effortlessly grasping his jacket's shoulder. (00:02:50)
Continuity mistake: When Santa tells Noelle he's anxious about inheriting his dad's role, the position of his arms is inconsistent between front and side shots.
Continuity mistake: When Pinky barges into the protagonist's home, multiple times (for instance when he sits in front of her) her pigtails move behind her shoulders from the front and vice versa between cuts. (00:06:00)
Continuity mistake: Catherine is in Brittany's flat and she sits down telling a bit about her past. Seen from behind she is touching the hair on the right side of her face, instantly turned into the left side at the cut. (00:16:25)
Continuity mistake: When Emma is with the clients at the beginning of the movie, Doug's ginger pen once he mentions 'rebranding' is either in his hand or on the notepad, depending on the angle of the shot. (00:04:10)
Continuity mistake: In a flashback inside a pub, the protagonist writes his number on a coaster to hit on the waitress. During the scene, the coaster changes position repeatedly between shots. (00:25:55)
Continuity mistake: At the beginning of the movie, the two knights are walking across the courtyard to get on their horses. When they mention the falcons' names, a young lady wearing an orange striped cape curtsies before them in passing. A couple seconds later during the close-up of girls ogling them from distance, the same lady passes in the foreground, coming from the opposite direction and in a totally different spot. (00:00:55)
Continuity mistake: Enzo's red tag hanging from his collar usually can be seen, but he did not appear to be wearing the red tag outside when Eve told Denny she was pregnant or when sitting in the bleachers with Eve at a race. (00:19:48 - 00:21:09)
Continuity mistake: Phil put 7 bottles of "Ouzo" in his basket (and left two on the display). When he was driving away, there were 11 bottles of "Ouzo" in the box on his seat. Also, when Phil was drinking on the bridge, the "Ouzo" was dark-colored (but "Ouzo" is clear or cloudy white). (00:15:32 - 00:24:14)
Visible crew/equipment: Ali's assistant sits in her office as she goes to apologise to him. But in the reflection of his glasses you can see the green screen which I suppose is meant be the windows of the office. (01:32:00)
Continuity mistake: When we see Erin and Leah for the first time, they're talking and smoochin'. Despite the conversation being continuous, the reciprocal position of their hands changes abruptly between shots at the beginning (Erin's hand is on the outside of Leah's, then on the inside, then outside again). (00:05:25)
Other mistake: The Burglar (while tied to a chair and talking about "My Darling Clementine") says, "Apex of Ford's art, you feel me?" Vikar (James Franco) responds, "I feel you." The movie starts in 1969, but rapper E-40 (Earl Tyrone Stevens, Sr.) - "slang master" - supposedly created the expression "you feel me" in the early 1990s. (00:19:53)
Continuity mistake: Right at the beginning, two dumb kids looking for drugs are forced to make a spontaneous donation to the cult. Before the stream starts the pink polo one does not have the scooter on his shoulder, which is back when the stream starts, then off again.
Continuity mistake: After the alien abduction, Emmet plans to lead a rescue mission and opens the gate asking "Who's coming with me?" During the sequence, the shadows change completely. At first he is not casting much of a shadow, then it reaches the metal doors, then it stops midway towards it. (00:20:55)
Continuity mistake: After the cartoon segment, Deni entertains some playful banter with his girlfriend and takes off, putting a shirt on while he runs. When the neighbour asks him "Late again?", the guitar strap is on opposite sides of the instrument as the editing switches to a reverse shot. (00:06:40)