I have noticed that my newest addition, a 2 month old female is much nippier than my little male was when I first got him. The male was 1 month old when I brought him home and although he was a bit jumpy for a while, he never struck. Now he's super laid back and doesn't really care what you do with him.
This little girl on the other hand, takes forever to finally un-ball herself when I hold her. Once she finally does start to explore, she's pretty feisty and always on the defense. She strikes even if you don't move. She'll be slithering along all adorable, will bump herself into your hand or arm and then bites like your the one who touched her. She's definitely a pistol.
I have read on a few other threads that hatchlings are typically spunkier than older snakes. Is this also true for BPs? Do they tend to grow out of it and will handling her more help or just make it worse?