the point on a curve where the curvature changes sign from +ve to -ve or vice versa; analogous to a point on a bend where the steering is momentarily straight whilst turning from left to right or vice versa
In real life:
the precise moment it finally sinks into a bloke’s thick skull that the girl he’s had a crush on for the past month is about to ease him into the friendzone
O bummer!
I suppose there might be a silver lining somewhere amongst all this. After all it is a chance to go back to the drawing board, devoid of options, to re-imagine the search; root and branch, rather than small tweaks here and there.
So here’s to learning; unlearning, relearning, and better luck/ success next time.