In a word, awful.
You know, Adam Sandler catches a lot of shit for his witless, tired comedy cash-grab films, but we probably can't blame him because he never really had much talent to begin with. We kind of expect him to float around the lowest common denominator.
Ben Stiller, however, does have talent, and should know better.
Here's a brief list of things that made this film infuriatingly bad, just in case you decide to watch it:
I would also like to point out that whatever hipster yahoos have taken over rogerebert.com have given this crapfest of a film 3 out of 4 stars. Yep, you read that correctly. This is the same score they gave 'Star Wars: Episode VII - The Force Awakens', 'Anomalisa' and 'The Witch'. So maybe chew on that while you watch this lame, cash-grab of a film. If Roger Ebert still had Internet access, one would expect the resulting rolling over taking place in his grave to register on the Richter Scale.