One of the benefits of growing older is that I have a smart mouth on me and I am not afraid to use it.
He apparently wasn't looking at the "big" picture, I think I would have helped facilitate that by answering, "I dunno, depends, are you going to walk home, call a cab or pick up the tab like a gentleman?"
Would I reallly say that or something very like it? Yes I would and I would say it matter of factly as an illustrative lesson and I would not regret it.
and, yes, I am wary of people who keep track of such things..as if those tangibles were somehow of more value than things that aren't easily numbered.