1. The plot is about a middle-aged drug dealer David (Sudeikis), who was mugged of his stash; to make amends with his supplier (Helms), he has to come up with a genius plan to smuggle a "smidge" of pot back over the border without being caught. Cue Rose (Anniston), Casey (Roberts), and Kenny (Poulter) as his average American family: the Millers. Obviously comedic antics ensue, and without revealing too much, the Miller's find themselves in a number of sticky situations that end up bringing them closer together, making them feel like a real family (aww).
2. The movie was written by the same people that wrote "Wedding Crashers", and was directed by Rawson Marshall Thurber, who wrote and directed a little movie you might know called "Dodgeball: A True Underdog Story". If that doesn't prove to you the movies funny, I don't know what will! (Except maybe the next three reasons...)
3. Apart from having a fantastic cast, the film also co-stars comedic legends Ed Helms, Nick Offerman, and Kathryn Hahn.
4. Umm, Jennifer Anniston's rocking 44-year-old body. Holy smokes.
Five stars. You won't stop laughing during the entire movie!