What does "be a long day" mean? Does it mean that someone spend a bad day?
Native speaker’s answer
Rebecca
When someone says that's "it's going to be/it's been a long day," they are expressing that it has been a difficult, tiring day to get through. It expresses that the speaker's day was likely unhappy and not good, or will not be good. This song's lyrics express this idea, stating that it was a long, difficult day without his friend. Ex: I have a headache and I was late to work. I can tell it's going to be a long day. Ex: It's been a long day. I just want to go home and sleep until tomorrow.