to fog a mirror
- idiom
- Archaic
Examples
-
Tiny aspiration, not enough breath to fog a mirror...
Fiction book (1996) -
I'm soft-spoken; my breath would hardly fog a mirror.
Fiction book (2002) -
During the job fair, if you could fog a mirror, employers were interested in speaking with you.
-
In the competitive job market of the 1990s, just being able to fog a mirror was enough to get considered for a position.
-
The new managers were hired simply because they could fog a mirror, regardless of their qualifications.
Surface Forms
Morphology
fog + a + mirror
Literally, 'fog' + 'mirror' yields the easily understood action 'make a mirror misty,' but the attested idiomatic senses ('to be alive' or 'to show minimal competence') depend on the inference that fogging a mirror requires breath/life and so signals basic ability. This pragmatic/metaphorical link is plausible but not fully predictable for a B1 learner without exposure, so the expression is only partially transparent.
Etymology
Fog a mirror comes from the small act of breathing on a mirror, so the glass gets a thin fog. If someone can only fog a mirror, they show the smallest sign of life or skill, so the phrase means 'to be alive' or 'to have barely enough ability'.