The empty barrels make the loudest noise...

I was eating some food at a restaurant, and there was a table of really loud adolescents beside me. The guy was somewhat annoying, because he was basically speaking so that everyone can hear, and if he were a gay guy, he would not impress me one bit. Like the saying goes, the empty barrels make the loudest noise.

By the way, does anyone know what season this clip of Family Guy is from?