pain point
n.— «The falling dollar is a threat. We’ve reached the pain point.» —“The Dollar Is Casting A Widening Pall Over Europe” by Blanca Riemer et al. BusinessWeek (42) Feb. 8, 1988. (source: Double-Tongued Dictionary)
Further reading
The emotional appeal of handwriting and the emotional reveal of animal phrases. Should children be taught cursive writing in school, or is their time better spent studying other things? A handwritten note and a typed one may use the very same words...
If you eat ice cream too quickly, the painful result is called an ice-cream headache, a cold headache, or brain freeze. But if you’d feel better using the medical term for it, it’s another mouthful: sphenopalatine ganglioneuralgia. This...