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
Ackroyd['ækrɔid]
BrynnBRINEnglish (Modern)
Jaswinder-Indian (Sikh)
Noah (2)NO-ə (English)Biblical
Michaela
HÜSeyn-Azerbaijani