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know (one's) beans

know (one's) beans

To be knowledgable about and/or very familiar with something. I had no idea you were such a good piano player—you really know your beans!
See also: bean, know

Common Names:

NameGenderPronouncedUsage
Halvor-Norwegian
Robbie['rɔbi]
ArjaAHR-yahFinnish
BlancheBLAWNSH (French), BLANCH (English)French, English
Donar-Germanic Mythology
Sinclair['siŋklɛə]
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