I’ve lived in the US my whole life and I don’t recall anyone ever getting it wrong. Except this scene in Seinfeld which is obviously Jerry being pedantic for comedic effect.

> Sid: Well I'm going down to visit my sister in Virginia next Wednesday, for a week, so I can't park it.

> Jerry: This Wednesday?

> Sid: No, next Wednesday, week after this Wednesday.

> Jerry: But the Wednesday two days from now is the next Wednesday.

> Sid: If I meant this Wednesday, I would have said this Wednesday. It's the week after this Wednesday.