Never had an aggressive BP, had a couple hide, coil or strike if surprised or fearful though, have had a couple other species of Lizards and snakes that were a bit more apt to bite. With most any reptile I check and recheck husbandry and location of the enclosure to make sure that isn't stressing them. Handle briefly every day or two, too often will stress them, I open the cage to feed, water clean, and general leave them alone if they are calm. If I open the cage intending to handle them, or if I am doing something else and they act pissy, you have to see it through and handle them, with gloves if needed, letting them get away with coiling, hiising, striking or so on will teach them it works to scare you away.