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 reaction gif of a small kid calmly saying "You're tacky and I hate you." Source: This is from the movie The School of Rock (2003), which starred Jack Black. The character's name was Billy and he was played by actor Brian Falduto.