Gavin isn't so much a single internet meme, but a whole series of them. It's almost as if he was raised for the purposes of bringing joy to the internet. Thanks to his wonderfully expressive face, he seems capable of capturing almost any mood perfectly; in many cases, he seems to be able to grasp the complexities of the human condition far better than people ten times his age.
There's a little bit of 'pushy parent' syndrome going on with Gavin. He's been turned into an Instagram star, with his every mood, thought and feeling captured and shared with the world, as if he belongs to all of us. He's still a very young man, so we won't know how he actually feels about any of this until he's older, but right now he's got a photo for every mood. If you can't say it with your own face, say it with Gavin's.