I like being a caregiver, almost "daddy" role to my wife, where it works both ways.
She treats me as an authority and asks me permission to do things related to her appetite: "Is it all right if I get another helping?" "Can I get some ice cream now?" "Are you sure it's OK if I take a nap after eating so much? I might get fat..." On the other hand, I like working a little extra to keep her full, asking her if she wants anything, what specific flavors, and going out even in the dead of night to get it for her. "Tonight I need chocolate ice cream. Get three servings, I'm feeling hungry" "I want fruit jelly!" "See if you can find some creme brulee..."
As a feedee, Ifeel I could be pretty flexible with the roles. But I also find a gradual transition from dom to sub quite arousing. Imagine being the big dog that slowly grows too big for his haunches unknowingly being played by a supposed sub feeder. And each demand and jab you made is the returned by that person full force.