Me: *Tries to hide that I'm depressed*
This is a surprised pikachu meme, and also a depression meme. The joke here is self denigrating because it indicates that the memester was surprised at something that should have been obvious.
That is actually the punchline of pretty much every surprised pikachu meme - the person is surprised at something that should have been obvious. That makes the surprised pikachu meme template an insult.
I didn't find this particularly funny, but perhaps that is because I haven't experienced depression?