1. What is it?
*Viewer Discretion Is Advised*
2. What is it about?
The Strange Thing About The Johnsons is one of those strange films that you have to see yourself because trying to describe what it is about will reveal too many spoilers, and it is a bit hard to describe and it is better seen than described.
But this is how it is described on the IMDB (The Internet Movie Database) page for The Strange Thing About The Johnsons:
A dark domestic melodrama / satire about the ties that bind and the ties that really bind.