They did so to conceal the fact that they were playing with Monopoly money—fabricating profits as phony as the pastel-colored money used in the classic Parker Brothers board game.
money that doesn't really exist, referring to fraudulent record keeping
Расстановка переносов
mon·ey that does·n't re·al·ly exist, re·fer·ring to frau·du·lent rec·ord keep·ing