TANSTAAFL

"Gospodin," he said presently, "you used an odd word earlier--odd to me, I mean..."

"Oh, 'tanstaafl.' Means 'There ain't no such thing as a free lunch.' And isn't," I added, pointing to a FREE LUNCH sign across room, "or these drinks would cost half as much. Was reminding her that anything free costs twice as much in long run or turns out worthless."