yahoo boyEnglishOxford Dictionary of Englishyahoo boy /ˈjɑːhuː ˌbɔɪ , jəˈhuː ˌbɔɪ / ▸ noun Nigerian English (also yahoo yahoo boy) a boy or man who commits fraud on the internet: police arrested the suspected yahoo boy the ransomware scheme is run by yahoo yahoo boys. – ORIGIN early 21st century: from yahoo3.