v. phr. To know who can help you and try to please him; know what is for your own gain. Dick was always polite to the boss; he knew which side his bread was buttered on.
KNOW WHICH SIDE ONE'S BREAD IS BUTTERED ON
Meaning of KNOW WHICH SIDE ONE'S BREAD IS BUTTERED ON in English
American idioms English vocabulary. Английский словарь американских идиом. 2012