A solemn warning
At the dinner table port must always be served clockwise, from right to left.
Never pass the port to your right or across the table unless you make the circuit first. For them that´s superstitious say that the Devil himself lurks at your right shoulder and if you should forget, he will pass his hand over the port and then goodness knows what will happen to you, your family and your dependents.
SO BE WARNED!!!!!