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 Coach Hines shaking his head while chewing gum. Coach Sandoval "Sandy" Heinz / Hines an angry gym teacher that is portrayed by Michigan-born comedian Keegan-Michael Key on MADtv.