bhoy exclamation 1noun 2forms 1 exclamation1 •(slang, old-fashioned) Exclamation of surprise, pleasure or longing.assumed that the clot howling in a McCormick tenor and interspersing his shrieks with "Oh Bhoy! Oh Bhoy!" was my best friend and co-editor — 1952 noun2 •(slang, old-fashioned) Boy.Whilst he was searching Luna in an attempt to spot Ego, the two Irish Bhoys tried to focus the other 'scope on the bedroom of a brunette opposite. — 1952 •A tough, a thug. formsbhoys