My baby king snake has a little bit of an attitude when I first pick him up...and he tries to pee on me. Fun fun. He tends to calm down with a little bit of handling.

Now if you want attitude with mostly bluffing, go for a blood python. Nothing like a 15-20lbs snake that is hissing most of the time. Only my matrix has ever bitten me, but my two red blood love to sit on my lap, hissing the whole time. Very vocal snakes.