1. Never come to visit without a call.
If you’ve ever gotten a surprise visit, you might have been caught off-guard wearing a robe and slippers. One British lady liked to say that when she saw an unexpected guest, she would put shoes on, take a hat, and grab an umbrella. If the person was pleasant, she exclaimed: “Ah well, I just came!”. If not, she said: ’Ah, what a pity I should go!’