Pyramiding Definition

An illegal scheme in which paper profits are used to finance the purchase of additional investments, or the offering of the opportunity to a participant to be paid for the chance to introduce new persons to the scheme who will each pay for the opportunity to introduce new persons, and so on.
Webster's New World Law

The practice of an athlete progressively increasing the dosage of an illegal drug to a maximum, and then progressively lowering it, between competitions so as to reduce the chances of being caught.