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 a Star Wars character dancing while the text "Don't Give A Fuck" flashes up on the screen. Great reaction gif to use whenever somebody thinks that they're annoying you or making you mad.