dìng
buttocks
butt
光腚肿菊
guāng dìng zhǒng jú
(Internet slang) punning reference to 廣電總局|广电总局[Guang3 dian4 Zong3 ju2], the National Radio and Television Administration (NRTA)
擦腚纸
cā dìng zhǐ
toilet paper