Bare bottom swollen anus

guāngdìng zhǒng jú 光腚肿菊

Sounds similar to guǎng diàn zǒng jú 广电总局, the commonly used abbreviation for the State Administration of Radio, Film, and Television (SARFT). The administration is sometimes referred to simply as "bare bottom," as it was in this song. See also SARFT is always anxious.