don't know beans

don't know beans

To know nothing or next to nothing. Don't ask me! I don't know beans about car engines.
See also: bean, know

doesn't know beans

Ignorance. The New England uncomplimentary description of a Bostonian who's so ignorant that he or she can't even cook the city's most famous dish of baked beans spread to the rest of the country.
See also: bean, know
References in periodicals archive ?
I came back here and visited a number of different companies and they all said, 'You've got an interesting background but you don't know beans about energy.
Truly, you don't know beans, lettuce or corn until you've experienced the heirloom varieties.
"The problem is we don't know beans about it," Lancaster Finance Committee member Walter Sendrowski said.
The technology experts who don't know beans about marketing.
Four-fifths of the way through her new book, For the Time Being, Annie Dillard confesses, "I don't know beans about God." Up until then she nestles her theology behind sharply pointed questions or submerges it in the ideas of Teilhard de Chardin, Simone Weil, or the cabalist Hassids.
I am curious about women's bodies, though I don't know beans about them.
They're smart guys, and I've had chicken at their place, but they don't know beans about trees or shade or how, with just a few minutes' work and some decent root growth, they could have a first-rate, cool-water pond that would give everybody in the neighborhood a hand up.