A certain phenomenon is lampshaded by illustrating it with a graph.
Do We Have This One?? Needs a Better Description. Rolling Updates. Bar graphs. Line graphs. Pie charts. Pictographs. They're typically found on the statistics page of your newspaper, and probably unnoteworthy... so one might not expect them to be used for humor. There's an odd appeal, though, in graphing things that generally aren't expected to be graphed. Hence, the Graph Joke. Most common in webcomics because of their target audience. This can apply to tropes, too. For example, a line graph can show a positive correlation between power and glowiness of weapons, and a pie graph illustrating the occupations of murderers can have a rather large "Butler" slice.
ExamplesLive Action TV