정철
Jinok replies by playing on the name of Jeong Cheol (鄭澈), first calling him iron (cheol; 鐵), then suggesting he might be false iron (seop-cheol; 攝鐵) and finally discovering he is genuine iron (jeong cheol; 正鐵). Unquestionably bawdy, this exchange is one of the finest examples of satire in sijo — a poetic form that placed high value on wit, double entendre and word play.