Rainbow Dash and Pinkie Pie have been dating for several months and the two couldn’t be happier with each other. Things take a weird turn following one date when Pinkie Pie reluctantly confesses to a rather odd kink of hers, one that Rainbow would have never associated with her in the past. While wanting to remain supportive of her girlfriend, Rainbow can’t help but feel somewhat confused by this new discovery and ponders how to approach such a development. Through love and dedication, perhaps Rainbow Dash might just discover what she once found off-putting might actually be somewhat enjoyable.
Long overdue story request I promised for good friend of mine Microscribbles (can be found on DeviantArt and Tumblr) who wanted some sensual EFRO with Equestria Girls Pinkie Pie and Rainbow Dash.

WARNING: Contains SOFTCORE SCAT. If you don't like it, hit the back button and move on with your life.
Or if you want to be a baby and downvote this on principal because "Ew, thing I don't like, I'm triggered Dx" then go ahead, I don't care. The person I wrote this for already likes it, so the story has served its purpose. Your downvotes aren't deterring me from anything.