Argumentation fields are extraordinarily varied. Depending on the area in which we move, our argumentative strategies should be appropriate for achieving the greatest success. The strength of a good argumentation must remain meaningfully in an argument developed in a logically valid way and rhetorically embellished, obtaining as a result a persuaded audience who consequently accept it.Irony, as a rhetorical trope of language, not only embellishes the argument, but it can also be a particularly persuasive argument itself. The ironic argument has some characteristic features such as its dependence on an active audience ready to interpret it, or its proximity to humor, which outlines a characteristic way of approaching the world of the ironic speaker. We will show how irony works within the written speech using Joan Fuster's aphorism as an example; and then, we will explore the possibilities of ironic argumentation in the visual field through one of Banksy's paintings.