User blog comment:Flaretail/What is a DOGE?/@comment-4635083-20131027144250

So basically it's a meme with a picture of a Shiba Inu, especially using its face and it's sometimes accompanied with some lowercase rainbow-colored Comic-Sans text. It became popularized by 4chan when it spammed the meme on the /r/MURICA/ subreddit. You can read more on the meme from "Know Your Meme" here.