The snake reared it’s revealed it’s venomous fangs and bit Bellatirx’s breast. She let out a wail of agony and then a moan of pleasure as Voldemort sucked on her pulling out the venom. Nagini bit her other breast and Voldemort fed off it. The more he fed the more in ecstasy Bellatrix was. As Voldemort sucked, Nagini used her tongue to flick Bellatrix’s clitoris until she came.