Pinkie's run out of helium for her balloons, and she won't be able to get any more for two whole weeks—which is practically forever. Thankfully, she's found one last balloon to hold onto, and she'll never it let it go.
Back when Pinkie Pie was still a filly, Maud joined her first party. After much retrospection, Maud came to a better understanding of both her and her sister.