Pinkie Pie sings the Smile Song in the My Little Pony Friendship is Magic TV show episode, "A Friend in Deed". Pinkie Pie loves making everyone around her smile. Cheering up her friends is what Pinkie Pie is here to do! When other people smile, it makes Pinkie Pie happy and smile as well! Do you have a friend who's feeling blue? Share this video with your friend and we're sure your friend will smile with this catchy song!