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 Andy Samberg from The Lonely Island shouting "I'm an adult!" This is from the music video for "Threw It On The Ground", in which Samberg portrays a childish anti-establishment hipster.