An expression used by drongo Engineering teachers to gain the students' attention. Usually said as an expression before telling someone something, it is often used to tell Father Clement to get off the lathe.
"Oish, you boys, get down 'ere"
"Oish, what the hell are you doin over there mate"
"OOOOOOOOOOOOOOOIIIIIIIIIIIISSSSSSSSSHHHHHHHHHH!! Nobody told you to bloody leave. Stand behind a vooiice please"
'Oish! Oish! Esmond mate, get dooown 'ere you useless dipstick"