Deliberate mistake: When Jim and Lauren are having their stargazing experience, it's clear that the pints of beer the monkey brings them are fake so that they don't get spilled.
Blended (2014)
1 deliberate mistake - chronological order
Directed by: Frank Coraci
Starring: Adam Sandler, Drew Barrymore, Terry Crews, Kevin Nealon
Genres: Comedy
Continuity mistake: Jen and Lauren are organizing a customer's clothes closet. Jen throws a pair of shoes onto a shelf and the shoes land askew. When Jen's cell phone rings and she answers the call, the shoes are neatly side by side. When she finishes the call and kneels down, the shoes are once again askew. When she stands up, the shoes are again side by side.
Trivia: When Jim and Lauren are at the store buying tampons and an adult magazine there is a cameo by 10 Second Tom - a character from 50 First Dates (another movie Sandler and Barrymore made together).