Why do I go crazy when I drink?!

When I drink a couple of beers I am fine but when I drink any more than that and I get drunk, I'm either "okay" or I flip out. Last night for instance, I went crazy. I threw stuff everywhere and broke things. I'm very embarrassed and I don't understand why this has to happen to me. Everyone I know that drinks can handle themselves fine and I feel so dumb that I can't get drunk without being a complete idiot! What is wrong with me?