Hahaha... yeah... they can be evil little guys! My friend's little one is pretty mean. We've been trying to tame him since October, and he STILL tries to bite. He's bitten me a total of 4 times. Two times he drew blood, but barely got me... the third was pretty deep, left a little flap of skin and everything. The fourth was deep enough that I could have gotten stiches (I have no medical coverage right now though... so I did what I could with it).
So, gotta watch those guys! My friend's ig is only about 16" including the tail... My ig is over 3'6" and I although she's never tried to bite me (well, out of aggression anyway...) I still keep an eye on her.