It's really quite dirty.

Reply of the Zaporozhian Cossacks - Wikipedia, the free encyclopedia: Reply of the Zaporozhian Cossacks is a historical tableau, set in 1676, exploiting the legend of the reply that the Cossacks sent the Sultan of the Ottoman Empire, Mehmed IV. The Cossacks of the Zaporozhian Host (from 'beyond the rapids', za porohamy), inhabiting the lands around the lower Dnieper River in Ukraine, had defeated Ottoman Turkish forces in battle. However, Mehmed demanded that the Cossacks submit to Turkish rule. The Cossacks, led by Ivan Sirko, replied in an uncharacteristic manner: they wrote a letter, replete with insults and profanities. The painting exhibits the Cossacks' pleasure at striving to come up with ever more base vulgarities. During Repin's time, the Cossacks enjoyed great popular sympathy. Repin also admired them: "All that Gogol wrote about them is true! A holy people! No one in the world held so deeply freedom, equality, and fraternity."