Lee, Sang-Hwa is one of the representative poets who elicit sexual devices as the discourse of humor in the history of contemporary poetry. This study seeks to examine the problem of sex and humor represented in our poetry in the two perspectives, such as `reality principles and conventional sex` and `sexual deviation and plastic sexuality`, focusing on Lee, Sang-Hwa`s first poetry, The Allegory of Bogs. Lee, Sang-Hwa`s treats decentered sex as major poetic objects. The decentered sex is free from old relationship which has been derived from ignorance and prejudice concerning biological and social difference between men and women, such as sexually fixed idea and reproduction, or kinship and generation. When we consider the mass production tendency of sexual discourses based on the liberation of sexual repression since 1980, his sexual satires and humors concerning the problem of conventional sex and sexual deviation have important meanings as a literary history. His poems constructively using vernaculars and secret languages definitely affect the extension of poetry province and form the distinct stream of our poems starting from Jeon, Young-Kyung and succeeded into Han, Moo-Hak and Kim, Ji-Ha.