Bare bottom swollen anus
From China Digital Space
光腚肿菊 (guāng dìan zhǒng jú): bare-bottom swollen anus
In Mandarin, this sounds nearly the same as 广电总局 (guǎng diàn zǒng jú), the commonly used abbreviation for the State Administration of Radio, Film, and Television. The administration is sometimes referred to simply as 光腚 or bare-bottom, as it was in this song that parodies the administration. See also SARFT is always anxious.