face not glass
When things go from bad to worse, like your mom's mood on a Monday. It's when you can feel the pressure coming from all sides, like being stuck in a bad situation with no escape.
My day was face-not-glass when I got detention and my lunch was soggy.
The game was face-not-glass when we lost the first two sets.
My face-not-glass moment came when I forgot my homework and my dog ate my backpack.