#574692 - safe, artist:gray--day, pinkie pie, earth pony, pony, g4, chalk, chalkboard, dialogue, female, glasses, mare, math, mathematical anti-telharsic harfatum septomin, mouth hold, pi day, pinkie pi, simple background, smiling, solo, speech bubble, transparent background

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[img]https://derpicdn.net/img/2014/3/14/574692/full.png[/img] [url=https://derpibooru.org/images/574692]View on Derpibooru[/url] - [url=http://gray--day.deviantart.com/art/Pinkie-Pi-359496972]Original source[/url]

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[img]https://derpicdn.net/img/2014/3/14/574692/medium.png[/img] [url=https://derpibooru.org/images/574692]View on Derpibooru[/url] - [url=http://gray--day.deviantart.com/art/Pinkie-Pi-359496972]Original source[/url]