Pinkie Pie was digging through her party supplies, looking for confetti, and was sad to find she no longer had any. Pinkie's eyes teared up as a Human floated in the window and gasped.
"This is the WORST. POSSIBLE. THING!" He said, mimicking Rarity. "Want some more confetti?"
"Yes please," the pink mare had yet to look behind her as she looked at her confetti box in sorrow.
The Human grinned and grabbed Pinkie before opening her head and stashing a new, infinite, source of confetti behind her nose. He oiled her joints and reattached the top of her head before tickling her nose with a pepper-covered feather and disappearing.
Several Hours Later
Pinkie had been sneezing for HOURS and a massive wave of confetti was racing across Equestria, hitting buildings and replacing them with some new ones made of balloons.
The Human watched with mirth as everything across Equestria was replaced by balloons, cotton candy, and other assorted party items.