In the beginning of the film, Wally and Kassie are seen taking the A train.
Although we are not shown if they switch trains, when she exits the train and the doors are closing, we see they are now aboard a 2 train.
On going to the drug store during the lice infestation they pick up black bin liners with yellow drawstrings.
On returning home there is no sign of a yellow drawstring.
During the final scene(s), Wally is at the BBQ wearing his wedding ring on his left hand but when he walks into the kitchen (continuous shot), it is now on his right hand, as is Kassie's.
Then when they both walk over to the table with the cake, their rings are back on their left hands.
When Wally and Sebastian are walking through the park the woman jogging and the man on the bike with the beige jacket can both be seen crossing the camera twice in under 30 seconds.
Without doubling back this is not possible.
The garbage bags that Wally and Sebastian buy to dispose of all the lice-ridden items are a completely different style and color of the garbage bags they bought in the drugstore.
(at around 40 mins) When Wally walks into the bathroom drunk and looks at the fertility chart, his watch disappears from his right hand when his hand is on the door.
It subsequently reappears.
During the climbing wall/birthday party scene, Roland and Sebastian are both on their own belay ropes when Roland goes up the wall to get Sebastian.
When Roland is lowered to the ground, Sebastian's rope is no longer there.
At the beginning of the final barbecue scene, Wally is seen using a gas grill, as evident by the burner knobs.
After walking in the house, he speaks of charcoal and lighter fluid, which are completely unnecessary when using a gas grill.
.jpg)
