Background Pony #F7F0

Ironically its also the only one out of the group without any real direct relation to pie.Pi can relate to circumference which is the shape of a pie, the apple pie is obvious and Pinkie Pie lives in a bakery with the Cakes so she's often around pies. But Oppai on the other hand isn't related to that, in fact I didn't ever consider the fact the last part sounds like Pie till this comic.