If this is not feasible, then after the umpteenth verbal invoice, the hit-upee can just  Sorry, I am tapped out.
There can only be, and there has only been, one verbal invoice.
mnli hypothesis: There can only be, and there has only been, one verbal invoice. premise: If this is not feasible, then after the umpteenth verbal invoice, the hit-upee can just  Sorry, I am tapped out.