knows one's head from one's ass

Questions

What does knows one's head from one's ass mean?

third-person singular simple present indicative of know one's head from one's ass

How to pronounce knows one's head from one's ass

1. Open the pronunciation page — Open the Speakur entry for “knows one's head from one's ass”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
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