Twilight Sparkle is a frotting champion at Canterlot University, in which she has held the title for many, many years. Following another game to defend her championship title, Twilight is visited by her cheerleaders, Rairty, Fluttershy, and Trixie Lulamoon. Once in the lockeroom, the three girls see that not only is she waiting for them, but something between her legs is also eager to see them.

Disclaimer: The Frotting only happens in the beginning parts of the story, the rest is good old fashion dominating.
This is a Commission for Tailsic.
Derpibooru: 1831421
An alternative version of the story written by EpicGamer10075 can be found here.