sentences:  According to Homer, Dia had sex with Zeus, who was disguised as a stallion, and gave birth to Pirithous; a folk etymology derived Pirithous' name from "peritheein" (), because that was what Zeus did to seduce Dia.His best friend was Theseus.In the "Iliad" I, Nestor numbers Pirithous and Theseus "of heroic fame" among an earlier generation of heroes of his youth, "the strongest men that Earth has bred, the strongest men against the strongest enemies, a savage mountain-dwelling tribe whom they utterly destroyed."