Chapter nine: Pinkie pie.
Pinkie pie was of a different farming family.
They actually farmed mostly eggs… But thanks to the explosion they all believed they were rock farmers thus becoming rock farmers.
Pinkie pie in her human form loved parties because she always had fun with it. Her pink shirt she had when the explosion happened wasn't designed but the balloons she had actually turned into her cutie mark.
Pinkie's parents frown upon her in her flashback because she wanted to have fun but her parents were always strict on getting work done…. A concept Pinkie seemed to have lost then when she threw her first party she helped her family have a little relaxation from their hard work as rock farmers.
Pinkie's sisters actually are also interesting.
The two seen in her flashback are her actual sisters but Maud is a half sister who happened to be someone who loved to study the science of rocks.
Pinkie and Maud were the outcasts of the family thus bonded better than the other members of their family.
Maud had been working on her field study of rocks when Pinkie threw her first party but joined later as seen in the picture in Pinkie Pride.
Pinkie and Maud both escaped the rock farm to try to follow their passions that weren't the same as on the rock farm.
Pinkie actually has two homes one within Sugercube corner and the other being a home she doesn't always visit but has just in case she needs to get away from the Cakes who were one of the firsts to figure out reproduction and even in their human forms were bakers. Pinkie's love of fun has allowed her to seemingly break the fourth wall and the inspired Cheese Sandwich following in her footsteps.