In the version that became ubiquitous online in the 1990s, the supposed benefactor is a Nigerian royal, government official, or business executive whose fortune is hostage to war, corruption, or political unrest.
This desperate personage needs only your bank account number (to transfer the money for safekeeping) or a relatively small advance payment (to cover taxes, bank fees, or well-placed bribes), or both. For your trouble, some of their millions will become your millions.
Of course, if you bite, your Nigerian “partner” will drain your account dry or string you along for more and more fees, until you finally get wise.
GIPHY App Key not set. Please check settings