Inkscape SVG: Download
Swapped Cutie Mark: Download
From Season 3, Episode 13 - Magical Mystery Cure.
Pinkie Pie, not having a very good time at all. Note that I used her normal Cutie Mark here, to make this vector more useful. I also made a version with Applejack's cutie mark, as it originally appeared in this episode—download link is just above this paragraph.