Afternoon in the Dojo

 Rarity is way too prissy and girly to be a match for star athlete Rainbow Dash, right? This "workout" is going to be a snooze.

AJ warns Rainbow not to get too cocky, and then laughs her head off when Rares reveals, surprise, she's a 4th dan black belt who's been training since she was 8 years old.

There's a fan theory that equine!Rarity might have studied some kind of pony martial arts given how often and how naturally she drops into a fighting stance; makes a nice contrast to have the fashionista be more physically aggressive than the farmgirl or the athlete/stunt flyer. And yet it would be totally in-character for her to have learned something so traditional, disciplined, and detail-oriented.

Also it occurred to me that this is almost the same as the slumber party pic. However, instead of Rarity spanking Rainbow, that one had Rainbow's #1 fan spanking Rarity's sister. Same position, and an Apple watching on in amusement. I really didn't plan them out this way.

Both times Rainbow got spanked and the one she dished out have been over clothes. Also not planned and working on developing that differently; just goes to show how my process works I guess. This one literally put together in an evening; the other one I'm working on has been around for years.