I have two rather large females that are absolute ash holes. They always eat. They strike at me through the tub! Ive tried feeding untill they were too full to possibly be hungry (to eliminate the idea that they thought i was food) and i ran outta rats or patience before they gave up. They his and puff up and strike. Sometimes they fly out of the tub at me.

But in the end i understand that snakes will be snakes and those two are particularly good at it. Needless to say they dont get much out the tub time.