This episode involves Angry Dad walking into his living room with a newspaper. He reads the newspaper, hoping the headlines will cheer him up after a long day. However, the headline reads "You Suck, Angry Dad". He gets angry, not at the insult, but the fact that it was opinion and not news, causing his head to swell and his eyes to explode.
This episode indicates that despite being based on Homer Simpson, Angry Dad seemed to have a bit more common sense than Homer, as he accurately stated that the headline was an opinion and not actual news.