Tanguy is another masterpiece of French humour.
A nice and wealthy couple has a son... Did I say "a son"? Sorry. I meant "THE son" you have always dreamed of.
Tanguy is smart and polite.
He's humble and wise.
He speaks several languages and has done as many doctorates.
He is (not) really handsome and women can't get over him.
BUT he is also 28 years old and still lives with mommy and daddy. And they cannot stand this situation anymore.
Instead of simply telling him to go away, they find a much funnier (and complicated) solution. They just make his life at home a hell. As the movie goes, they get more and more inventive.
The first time I saw this movie, I hated it. I thought it was merely cruel. Then I watched it again a few years later and I loved it.
It is extremelly sarcastic and well imagined. Unlike the Diner de Cons, for instance, you don't grow found of the main character. So each time you see him suffer, you are not torn between pleasure and guilt.
It is funny, it is cruel, it is cynic : it is French.
Don't take my word for it, watch it. ;)