Pinkie's sister Oc's belong to this YouTuber:

https://www.youtube.com/user/ExperimentReiProject

He/She has made an intire cupcakes series I suggest you check it out!

Timidthy isn't one for sweets. He only eats them when him and his friends do some sort of accomplishment. Any other time is a rare oddity. Except when it comes to Pinkie he's always loved her cupcakes. And he's always wondered what's inside that makes them so good! Unfortunately.....he finds out.....