社交：有什么大家都应该知道的不成文的社交法则

What are some unwritten social rules everyone should know?Corey AlexanderUpdated Mar 23The male nodding rule. Nod up for greeting friends, nod down for greeting strangers.If you're ever at someone's house and they mention that “they've got a lot going on at work tomorrow” or “it's getting late and I'm tired”, it's time to leave.If someone has earphones in, they're not looking for a conversation.When possible, leave an empty urinal between yourself and other people in the bathroom.Turn your phone off while at the cinema.Chip in fuel money if someone is driving you often or a considerable distance.