UK too, particularly common in the forces.(For those unaware it is rhyming slang - seppo = septic tank = yank). Somtimes just “septics” too.
Can’t say I’m familiar with it but it sounds kind of like what https://calckey.org/ is trying to do now?
UK too, particularly common in the forces.(For those unaware it is rhyming slang - seppo = septic tank = yank). Somtimes just “septics” too.