pain point
n.— «Quebec small businesses have the second-highest labor “pain points.”…On a national basis, the survey found 70 per cent of small businesses had serious problems with labor laws and regulations.» —“Manitoba businesses head list assailing labor law, survey finds” Toronto Star (Canada) Nov. 20, 1986. (source: Double-Tongued Dictionary)
Further reading
In 1968, students at Cheyenne High School in Cheyenne, Wyoming, compiled a collection of their own slang, including the word Clyde, used to refer to one’s head, as in Use your Clyde! This is part of a complete episode.
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