Firstly, nice tag.
And secondly, WOW! He sounds like a total heathen! Less like a brother, more like the spawn of Satan on wheels!
Hopefully this is a stage he's going through that he'll grow out of. But it seems that, since he's showing some violent tendencies at such a young age, it might be beneficial if someone enrolled him in children's counseling. The manipulation tactics he's using (i.e. convincing you to make him food just so he can throw it on you) are... well, alarming.
Until then, best of luck with having to deal with him. I hope he actually develops a sense of right and wrong. If not, there's always Nanny 911.