My friend

Our relationship goes back many years but neither of us knows the other's name. We refer to each other as "my friend" as in "How are you my friend?". A running gag is that he uses a calculator to add up the bill while I try to add it up in my head (even though I'm reading his pad upside down). Then we might chat about cars (about which I know nowt) or football or the weather or some snippet of village gossip. If it's busy he'll be fielding telephone calls and checking with the kitchen while I read and then he delivers my carrier bag of take-away food and we part.