扣屎盔子 kòu shǐ kuī zǐ

kòu shǐ kuī zǐ set phrase to cap in excrement; to discredit with absurd unfounded accusations; to vilify
Domain: Modern Chinese 现代汉语 , Subdomain: Dialect , Concept:
Notes: Northern dialect (CC-CEDICT '扣屎盔子')