A fork of Rural Dictionary
Referencing Jack and The Beanstalk, ‘holding my beans’, means I’m saving my money and not spending it, in the hope of growing those beans into a lucrative beanstalk. It can also be used to say that money is invested somewhere.
“Are you coming out after work?” “No, I’m holding my beans.” “Have you got a lot of savings?” “No. My investments are holding my beans.”