Public transport rage describes the phenomenon that many passengers on public transport easily fly into a rage during rush hour. Commuters who are usually calm and well-behaved will argue or even physically fight each other in order to grab a seat. The stress caused by rushing to work and being held up in traffic jams contributes to these outbursts. (Source: Shanghai Daily)
公交狂躁症（public transport rage）指在乘车高峰时段，很多乘坐公共交通的乘客特别容易动怒。平时沉着冷静、行为有修养的人会为了抢座而与人言语相交、甚至大打出手。赶着上班的心理压力以及路上遭遇的交通拥堵等都是导致公交狂躁症的因素。
You may witness public transport rage everywhere during the rush hour, people are just complaining or arguing about trivial matters like overcrowdedness or someone’s foot being stepped on.
"Frenemy" (alternately spelled "frienemy") is a portmanteau of "friend" and "enemy" which can refer to either an enemy disguised as a friend or to a partner who is simultaneously a competitor. The term is used to describe personal, geopolitical, and commercial relationships both among individuals and groups or institutions. The word has appeared in print as early as 1953.