It's too cold outside
For angels to
The night and time is too harsh for her to try and start a new life. In other words, she is procrastinating. She wants a better life, but she’s too depressed to think it will ever work out.
The line is a metaphor. it’s to cold outside is not referring to temperature but rather a cold society. Despite her beeing an “angel” she is unable to fly outside because she is constantly being judged by the cold society she lives in. thus the line it’s to cold outside for angels to fly.
The line is referring to her but is not a specific her. It is a general term on society and how superficial it is and that is basically what the song is about. It shows the human side of whats in this case a prostitute, but can be applied to anyone who we normally would not wanna relate to. I guess it’s a way to protect our selves.
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