Gif Central boasts hundreds of funny animated gifs. Only the best of the best make it onto this site, with most of them having an accompanying source. No tumblr-esque one-second-long disappointments. No obscure titles or descriptions.
This is an animated gif of American actor Tommy Lee Jones playing ping pong. The fact that he doesn't even have to move makes this a great analogy gif that sums up how it feels to go against the impossible.