Sharon mentioned it in the Vivarium intro. All vivarium residents believe in a god they call “Veles”, so Kira should say OMG instead of OMS in order to blend in.Wait what? Isn't it basically gospel that everyone says OMS instead of OMG. And even if not, shouldn't everyone in the farm say OMV instead?
However, dumb Kira’s just ignores this and smart ones stop giving a fuck after awhile, so it all just comes down to the Vivarium residents saying OMG.
That said, I’m honestly impressed you even noticed this.