[Pinkie spends a while wandering the Post Office, calling out and looking in various, increasingly improbable hiding spots. Eventually, though, she just gets bored and leaves the cupcake on a plate, with a few signs and even a small blinking arrow pointing at it.

Before she goes, she calls out again:]

This was fun! I should warn you for next time, though, I'm TOTALLY Ponyville's Hide-and-Seek Champion! Five years running!