It's not the first movie to turn a "hostile" situation into a funny one. But it still is able to remain kind of sweet and almost innocent. Obviously a few factors come into play that other movies were not able to use (the internet) and some other stuff. There are some interesting influences coming from outside the family circle (friends, co-workers and more).
The movie is funny, but has some logic issues. Then again, if you really buy into the movie (with its flaws) you will be able to enjoy a funny movie, that goes a bit dark (the young sister channeling some classic movies), but never loses the viewer with any sort of violence. For all its "dark" moments, it still might feel a bit too neat for some in the end, but it does pull the whole thing off
The movie is funny, but has some logic issues. Then again, if you really buy into the movie (with its flaws) you will be able to enjoy a funny movie, that goes a bit dark (the young sister channeling some classic movies), but never loses the viewer with any sort of violence. For all its "dark" moments, it still might feel a bit too neat for some in the end, but it does pull the whole thing off