The English language is such a wonderful descriptive tool, quite difficult to perfect, very easy to misunderstand, so simple to misrepresent the true meaning of what you actually say, or write. My take on what “Bob” meant, was his reply to the phrase about CM - “tell your mate he would not be welcome up here” was as he replied “he is at my house” as in he would welcome him at his house and not - “he is at my house” - which can be rightly interpreted as - he is currently here in my house. As I said initially, The English language eh!!