wonder bank
n.—Gloss: an organization in Nigeria that falsely promises high returns on low investments, a trick similar to a pyramid scheme. «While not saying the wonder banks were out to dupe the people, the banker said what they promised was just too outrageous and a right-thinking person would not fall for that. “If it was possible for an organisation to return N100,000 on a N27,000 investment after four weeks, then why would people need to work?,” the banker asked.» —“Tears, regrets as ’wonder banks’ suspend operations” by Adewale Oshodi Nigerian Tribune (Ibadan, Nigeria) Oct. 3, 2007. (source: Double-Tongued Dictionary)