not have two brain cells, pennies, etc. to rub together

not have two (something) to rub together

To be totally bereft of or lacking in something. Oh please, that fool doesn't have two brain cells to rub together—there's no way he could pull off such an elaborate plan! There were a few months during college when I didn't have two pennies to rub together, surviving off the handouts of my friends and housemates.
See also: have, not, rub, together, two

not have two brain cells, pennies, etc. to rub toˈgether

(British English, informal) be very stupid, have no money, etc: How can they afford a new car? They haven’t got two pennies to rub together.
See also: brain, have, not, rub, together, two
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