Continuity mistake: A vast majority of the movie occurs over the course of a single day, so it would be expected that Becky's hair stayed about the same. However, there were frequent fluctuations in Becky's hair's length, how her bangs were arranged, and color (whether the blue streaks could be seen at all or how much at a given time, and if she had dark roots on the top of her head).
Continuity mistake: Towards the beginning of the flashback, Jahkor gets thrown to the ground. The legs of the bully in the close-up cast a shadow over Jahkor's body. Cut to the next shot, and the shadow is away from Jahkor in a blatant change of direction of the light of the scene. (00:09:35)
Continuity mistake: After the announcement from her boss that she is scheduled to 'marry' her quasi-fake BF, Ana goes to the gym to meet her friend. When they are talking, she says "it's been forever, it's already kind of worn out." Ana's ponytail is in front of her shoulder, and goes back behind her back in the next shot. (00:10:00)
Continuity mistake: At the "Wave Hair Salon", Ms. Gordon has a curler/roller at the top of her forehead. In some shots, it is straight, but in other shots it is angled. A little later, Christine goes over to Ms. Gordon and starts rolling down the curler to the top of her forehead as if for the first time. (00:08:04 - 00:08:47)
Continuity mistake: Views of Michelle's car wreck were inconsistent. When the car veered to the right and was headed toward the tree, the driver's view showed most of the car was to the left of the tree trunk. On impact, it looked like the right side headlight hit the middle of the tree trunk. Michelle got out and a rear view showed the tree trunk roughly lined up with the steering wheel (i.e, more than half of the car was to the right of the trunk). After impact, both headlights were shining in front of the tree.
Continuity mistake: The replay of Bart and Andrea's conversation at check-in are not verbatim - at times, only a word or two ("uh", "um", "just") is added, but other times there are parts that simply were not stated. Granted, Bart is practising and his additions are not meant to be a reflection of what was actually stated, but the things Andrea said were on tape and these do not always match. Bart did not ask, "Seven nights?" and Andrea didn't reply, "Yeah. A week, maybe longer. I'm not sure yet. So, you're new." (00:27:14 - 00:28:47)
Continuity mistake: Tommy had a cup of coffee in front of him when he met Jaylene at the outside table. After Jaylene showed Tommy the picture of him and Sandy, the coffee cup was to the right of the ashtray and closer to Jaylene (as though it was hers). Also, the mini creamer cups that were on the saucer appeared to be gone. (00:07:17 - 00:07:54)
Continuity mistake: The protagonist receives her gift from Molly Shannon. She unwraps it and puts the discarded wrapping on the counter. When we see it again at the end of the scene, the wrapping is much less torn apart than the first time around (or at least has been arranged neatly). (00:09:45)
Continuity mistake: When Theo says, "You can pull them [flowers] out if you want to", there's one flower that is slightly pulled away from the vase, drooping below the others. When Felix [Bill Murray] is next to the flowers, there is not a flower pulled out at first, but there is a few camera shifts later. (00:34:00 - 00:36:37)