koyok
A phoney or fraudulent item; anything deceptively promoted as genuine or of high quality.
informal, uncountable
Whenever I meet Meng Seng, he is always trying to sell me his koyok and recruit me into his Party.
Where it comes from
Borrowed from Malay koyok (“quack medicine”), from Hakka 膏藥/膏药 (kò-yo̍k, “herbal plaster, medicated patch, poultice”).
Adapted from the Wiktionary entry koyok (CC BY-SA 4.0).