地鐵三文魚

Subway salmons refers to the one or two people who insist on going up a stairway or down a stairway (usually after a train arrives at a subway stop) while all the people leaving the train are going in the opposite direction.

地鐵三文魚指的是地鐵站里（經(jīng)常是地鐵到站后人大量涌出時(shí)）堅(jiān)持逆著人流上下樓梯的一兩個(gè)人。

Example:

"Of course there were subway salmon when I was late for work and I was trying to get out of the subway in a hurry ... Dude, couldn't they tell the train already left?"
“上班遲到想趕緊從地鐵里出去時(shí)總有‘地鐵三文魚’……老兄，難道你看不出地鐵已經(jīng)開走了嗎？（還擠個(gè)什么勁啊）”