Thorax's stay in the Crystal Empire comes with several conditions that he needs to follow, such as not leaving the palace without being accompanied by a pony. One of the bigger conditions though, is that he has to do everything Cadence and Shining Armor tell him, no matter what.

So when Shining Armor and Cadence decided to go ahead and make Thorax their personal pleasure toy, the poor changeling doesn't really have any say in the matter.

Contains: Small thingie humiliation, m/m/f, bisexual sandwich, Oral, dubcon, gags and the like.
Secret Spoilers: It was roleplay the entire time, and this is a secret sequel to A Twink, A Dominatrix and a Husband

This story was a commission from Disappointment-Incarnate
Cover is a crop of a picture from Saurian, derpibooru image /1503565