v. phr. To be of little or no value. (Said of plans, ideas, etc.) "That's a fairly interesting concept you got there, Mike, but the competition is bound to say that it doesn't add up to a can of beans."
DOESN'T ADD UP TO A CAN OF BEANS
Meaning of DOESN'T ADD UP TO A CAN OF BEANS in English
American idioms English vocabulary. Английский словарь американских идиом. 2012