know one's ass from a hole in the ground

English dictionary entry

Meanings

verb
  1. To have an adequate level of knowledge or skill; to understand what one is doing or talking about.

Word forms

know one's ass from a hole in the ground knows one's ass from a hole in the ground knowing one's ass from a hole in the ground knew one's ass from a hole in the ground known one's ass from a hole in the ground know the difference between one's ass and a hole in the ground
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