Cabin fever
最近的天气岂一个热字了得，出趟门就像上刑场。没办法，只好老待在空调房里。估计有不少朋友已经得了cabin fever。
Cabin fever并不是真正的发烧，不过我倒觉得描述现在的情形很贴切：大热天的，难免心烦气燥，火气冲天。这个词组的定义是： Boredom, restlessness, or irritability that results from a lack of environmental stimulation, as from a prolonged stay in a remote, sparsely populated region or a confined indoor area.
很显然，我们属于后一种情况——from a confined indoor area （i.e. air-conditioned rooms）。
关于这个词组的来源，始终没有定论。比较流行的有两种说法：
1. It possibly originated from the United States at the time when settlers would be snowed in frequently, in remote unsettled lands, with no communication with the outside world.
2. A possible source for this phrase could be that during an outbreak of some disease, people who had a fever were confined to a cabin as a quarantine. Hence the phrase ‘Cabin Fever’.
我觉得两种解释都说得通，后者更贴近字面意思一些。有兴趣的朋友可以去看看同名电影，或许能得到些提示。
另外，stir-crazy跟cabin fever的意思差不多，但词性不同（前者形容词，后者名词）。参考定义：Distraught or restless from long confinement in or as if in prison.
定义里的prison并不完全是引申义，因为stir作为俚语就是prison的意思。有兴趣的朋友可以深究一下。我觉得用stir的本义（搅和，煽动）去理解stir-crazy也挺形象的——别惹我，烦着呢！谁跟我搅和我跟谁急！ 
Bonus video: Annie - Chewing Gum