An infamous phrase use by one of the strongest warlords to date. Can be combined with names, e.g: Oigan, Oithan.
"Oi oi oi!"
Another example of oh or a surprised reaction over a texted or during a game. Can be used in real life also but mostly in a typed way.
“She smells like hotdog water” she typed “Oi-“ I typed back
To grab some ones attention with British /Roman slang
Oi , you lot