Marble moved to Ponyville and lived with her sister Pinkie for over a year originally to try and get close to Big Mac. While there, she developed her sister’s candy binging habbits and gradually ballooned up around the booty. Though she wouldn’t have Big Mac in the end, she still has a little more ease in herself since she has made the added plumpness look good on her as she is now showing off on the beach with it. :p
My personal headcannon with this!
Edited
I need to work on my rear views like this lol
You must be new. Been using meme phrases for years. Lol