This is a scene from the next chapter of "Cheesy as Pie" which is part of my fanfic series, Flurry Heart's Story. Pinkie is saying how excited she is that Flurry is visiting, gives the whole "I'm so excited! I've never been this excited before! Well except for that one time…" speech again and starts babbling on about the moment she first met Twilight.
Now you regular viewers may know that I make Pinkie chubby in FHS, so why is she not chubby here? Well because she's inhaling so hard that it's causing her to look thin for a brief moment in time much like people do when they suck in their stomach to look thinner. Right after she's done, her entire body inflates again like a balloon and she goes back to her plump self. Cheese and the kids think it's quite hysterical. :3
Click here to start reading Cheesy as Pie: https://www.fimfiction.net/story/471241/cheesy-as-pie