Noun
a fraudulent scheme in which people are recruited to make payments to the person who recruited them while expecting to receive payments from the persons they recruit; when the number of new recruits fails to sustain the hierarchical payment structure the scheme collapses with most of the participants losing the money they put in
Source: WordNetOrganized religion: the world's largest pyramid scheme. Bernard Katz
It is a certainty that Herbalife is a pyramid scheme. We believe it's harming a population of low-income, principally Hispanic people in the U.S. to benefit a handful of super wealthy people at the top of the pyramid. Bill Ackman
The full retirement age is 67 and the lifespan is 80, so when they first conceived Social Security, they didn't think they were going to be paying benefits for 13-15 years. That's one of the reasons why this pyramid scheme isn't working. Joe Heck