What does no good varmint mean?

The phrase "no good varmint" is a colloquial expression often used to describe someone or something perceived as worthless, troublesome, or deceitful. "Varmint" is a term typically used in rural or Southern American English to refer to pests or undesirable animals, but it can also extend to people. Thus, calling someone a "no good varmint" implies they are annoying or untrustworthy. Overall, it conveys a strong sense of disapproval or disdain.