I hate to say it, but I'm afraid being a native speaker doesn't give me any advantage in understanding this. I have to assume "swapping houses" refers living in one while renovating the other, but without more context ("that way, the paint fumes don't keep us awake at night" or "that way, we don't get sick of working on our own projects, because we're always trading jobs") I can't tell who's living where or doing what or when. And I also don't know why they're looking funny at him.
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DelmobileI hate to say it, but I'm afraid being a native speaker doesn't give me any advantage in understanding this. I have to assume "swapping houses" refers living in one while renovating the other, but without more context ("that way, the paint fumes don't keep us awake at night" or "that way, we don't get sick of working on our own projects, because we're