I have a question about my baby corn snake?

He is approximetly 10-12in long he was born in late 2010 and he is very very agressive. I fed him yesterday so he isn't hungry. He's never bit me. He's tried but failed. He rattles his tail like a rattlesnake would but I think that's kinda common for every snake. Every time I take the lid of the tank he rattles and curls into the "S" and I know that means he's gonna strike. If he were to bite me would it hurt? Is there something wrong? Is he supposed to be this agressive? Is there any way to make him more docile? I keep the tank at about 80 degreese F and I use paper towls as substrate. Any advice?