I have this recurring fantasy with my fave character as a futa with a tiny penis, and all the other girls are also futas who laugh at her and take turns fucking her with their much larger dicks. And then the bitchiest one gets her a cock cage and goes on and on about how it had to be custom made and the manufacturer didn't believe her about how small it needed to be.

Basically all the penis-related humiliation kink, in a lovely femslash package.