I finally got Octavia, my '03 BP, probed. Turns out, she's a he. So I guess that "popping" snakes when you get them, is no reliable way to sex them.
I still love "him" just as much. But I was hoping for him to be a female, since I want to breed BPs someday in this lifetime. Luckily Bela is a bona fide female. So now the tally for me is, three males and one female.