Continuity mistake: Near the beginning when Max is talking to the cook about having to take a pregnancy test, her left arm is close to her side. The shot changes and her arm is instantly stretched far across the counter.
Continuity mistake: In the theatre, there are 3 'nerds' that are sitting behind Max and Caroline who swap to a solo guy, then when Max and Caroline leave the theatre, swaps back to the original three. Once Hans leaves, someone is already sat in his seat and the woman next to him isn't the same one.
Factual error: The girls are invited to the Grammy Award ceremony and fly private in a Bombardier G5. There are 3 passengers, one flight attendant, and one pilot (Captain). There is no first officer. It's illegal to operate the Bombardier G5 with a single pilot.
Continuity mistake: When Chestnut is eating his birthday cake, in one shot there are no carrots on top of the birthday cake, then in the next shot there is one still on there. Max then takes the carrot off to feed it to him, leaving no carrots, but in the next shot there is still the one on the cake again. (00:00:55)
Continuity mistake: In the open, Max and Earl are standing at the end of the counter and when Max holds up the cup, Earl covers his face with his hand. The shot changes and Max is still holding the cup in the air but both of Earl's hands are now on the counter.