Cold finger means to ignore someone's text or social media site message and comment, especiallly when this person's message is pointless or uncalled for.

“冷手指”指无视某人的短信或者社交媒体上发来的私信和评论，尤其当这些信息毫无意义，也没啥道理的时候。

看到cold finger这个说法，你是不是觉得有点眼熟？没错，其实这个说法就是从cold shoulder这个短语衍生出来的。

This expression is similar to "cold shoulder", a phrase used to express dismissal or the act of disregarding someone. The only difference is that cold finger is usually hidden behind a screen, while cold shoulder can be right in front of your face.

这个表达与cold shoulder类似，后者通常用来表达拒绝或无视的行为。二者唯一的区别是，cold finger通常是躲在屏幕后面完成的，而cold shoulder可能是当着你的面表现的。