Surely those familiar with the pop culture phenomenon known as "Pokemon," can easily recognize the image above to be a Pokeball. Even those who are unfamiliar are at least able to recognize this symbol, or sign, as something related to the Pokemon franchise. This website, for instance, doesn't attempt to correct me when I spell Pokemon, but for the less popular, "Digimon," the dotted red line of err appears.

The Pokeball as a symbol elicits the feeling of competition for those who have delved further into the Pokemon world than others. Many of the more important battles will actually have something similar to this before entering. Moreover, these Pokeballs are essentially the weapons that summon the befriended warriors to the field and a brawl ensues. While the picture itself isn't about competition or battle, the pathos of the image brings about a sense of pride and accomplishment. Simply seeing the picture sets up those emotions which allows the text to drive the message of the image home.

"Don't call me a 'nerd'. The proper term is 'POKEMON MASTER.' "

The first sentence isn't so much a request as it is a demand. Don't call me a nerd. It's as if an insult had been thrown and now you're on the counterattack. Note that the word 'nerd' is in all lowercase letters, while 'Pokemon Master' is in all uppercase letters, showing that the prominence of the word should be treated with respect. Also note that the largest pieces of text in that picture are the words, Pokemon Master. The rhetoric and even construction of the picture was made to make those who played the game proud of the arbitrary accomplishments such as catching all of the Pokemon and saving the world (constantly) from the clutches of Team Rocket/Magma/Aqua/Galactic/Plasma and all of those other ne'er-do-wells. All of this to simply show that being a Pokemon Master is higher on the totem pole than being a nerd, and are better than your generic nerd.