( informal ) to have no money; to be very stupid, etc.
NOT HAVE TWO BEANS, BRAIN CELLS, ETC. TO RUB TOGETHER
Meaning of NOT HAVE TWO BEANS, BRAIN CELLS, ETC. TO RUB TOGETHER in English
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005