Can it be a member of the Mane 6 spanking another member of the Mane 6? Like say, Flutters paddling Dash's sorry plot for the Trade Ya episode?

5425563
That would be a hilarious thing to read. Maybe Corporal would be busy dishing out justice somewhere else, so Fluttershy takes it upon herself to right the wrong committed by Dash.

5425563 A fascinating idea, but it's a second-person story for a reason. Having Fluttershy hire the Corporal to do it, and watching the whole thing, THAT would be nice. And then having her take over. . . .

Excuse me, I have writing to do!

*Scribbles down idea*