When you have "too much month" left at the "end of your money". When you're SO broke you have LESS than zero money. You just wrote a $6.00 check for teriyaki chicken and it's going to bounce... leaving you with a bank balance of -$30.00 after the overdraft fee kicks in. Sucks doesn't even begin to describe your financial situation.
Lunch means nothing to you, you're rich and I'm brokeless.