yahoo-yahoo boy
n.— «Today, the con usually relies on e-mail and is often called a 419 scheme after the anti-fraud section of the criminal code in Nigeria, where it flourishes.…The scammers, who often operate in crime rings, are known as “yahoo-yahoo boys,” because the frequently use free Yahoo accounts.» —“The Perfect Mark” by Mitchell Zuckoff New Yorker May 15, 2006. (source: Double-Tongued Dictionary)
Further reading
When there’s no evening meal planned at home, what do you call that scramble to cobble together your own dinner? Some people apply acronyms like YOYO — “you’re on your own” — or CORN, for “Clean Out your Refrigerator...
Have you ever googled your own name and found someone else who goes by the very same moniker? There’s a word for that: googleganger. Plus, the language of hobbyists and enthusiasts: If you’re a beekeeper, perhaps you call yourself a...