I guess it's okay to label this as a black comedy, but there are very few laugh out loud comedy moments, the comedy comes more through the premise of the film. It also feels as if this movie is a major venting of frustration for modern parents who are stuck with the spoilt brats they gave birth to. Selma Blair gives a solid performance as a gorgeous mother who is starting to pass her prime and worried that her best days are behind her, she is not shallow enough to stoop to sleeping with the yoga teacher to make herself feel better about it. Nicolas Cage plays the aging father who tried his best for a while but has basically given up and withdrawn, looking for simple ways to reclaim some of his youth such as building a perfect snooker table. As something causes parents to lose their inhibitions and become like many wild animals who will occasionally kill their offspring, things get crazy in the schoolyard, the streets and in homes. The kids of our two leads do their best to survive the ordeal and this battle is the climax of the film.
It's definitely a new and interesting idea, and while it doesn't fully tap Nic Cage's potential it definitely allows him a few great moments to go full 'Nic Cage'. Avoid it if you have a real problem with over the top violence against children, but if you have no issue with that then watch it on a day when your kids are being particularly bratty haha.