Question of the Day #1398

Here's why I don't care about fair weather fans and you shouldn't either

From the headline of this article at CBS Sports.

  上記の文で、fair weather fanの意味は？
In the sentence above, what does "fair weather fan" mean?

  答えは、コメントに書いてください。
Write your answer in the Comments.

明日、ここに答えを書きます。
I will add the answer and other remarks here tomorrow.

 

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