OPEC is the acronym for an Arab Conglomerate (Consensus/Cartel) meaning Organisation of Petroleum Exporting Countries. The OPEC Boys lived in Arua and during the 1980s smuggled lots of petroleum which earned them lots of money.
With these sacks of money they came as far as Kampala and spent lavishly on booze and women. That’s when people coined the word “Arua Boys” meaning people or guys from Arua who had lots of money.
Most of these guys did not go far with books and were known by many people. Nowadays they don’t make that much money.