I’ve been toying around with a sister/step-sister dynamic. The scenario lends itself well to lots of teasing. Imagine your sister was a pred who knew you were into vore and loved teasing you. She’d wear crop tops and loudly parade her belly around the house, accidentally bumping into you. She’d make eye contact with you at the table while she swallows massive pieces of food whole. She’ll jokingly tell you about who it was she ate and what they tasted like, then ask you if you’d like to join them, loudly complain about how none of her cute clothes fit because she keeps getting heavier, and walk around wearing a pair of booty shorts with half her ass hanging out. One day you might bring a friend over and leave the room for a moment, only to come back to her sitting there, cradling a full gut and saying “Oh, were they with you?” this kind of teasing would drive you wild, but you’d be afraid to do anything. Odds are it would go on until she eventually decides to eat you for real, or you just say “fuck it” and start screwing her.