A cryptocurrency, which was originally created only as a joke, but later got popular.
It is a split of the Luckycoin cryptocurrency site, which is a split of the Litecoin site. It uses proof-of-work mechanism because it also is a derivate of Bitcoin, but the difference is, that the number of maximum emitted units is not yet known.
It uses hash algorithm called scrypt. As its predecessors, it is set up to handle transactions quickly. They are confirmed usually within one minute. As has already been mentioned, it was originally created as a joke. Its name and logo were taken over from popular internet meme Doge.
Funny pictures from the community: