ATHEISTS, what is your proof that God doesnt exsist?

Hey, you're the one who's trying to convince me to believe; where's your proof? I was just sitting here minding my own business watching Oprah, and you came running in saying, "Hey, you gotta hear about my main man God. He's all great and junk." I was like, "Who? What? Where?" And you were like, "Well, you can't see Him, but He's there." So, okay, man - like prove it or shut up already.