That gives you a heads-up that you're a little low before the idiot light comes on to warn you that your engine is about to melt.
From the sfgate.com
If you're whipping along ignoring your idiot light and the engine starts to cough, you mustn't coast to the shoulder and walk to the nearest gas station, because both of those acts are illegal.
From the post-gazette.com
It was basic stuff like leaving the camera on idiot setting in good light and tricks how to compensate when you have to.
From the telegraph.co.uk
In light of this article, one brave idiot decided actually to attempt to do all 50 of these tasks over the course of his third year at university.
From the independent.co.uk
It was an extremely poor choice on my part, and I was just trying to make light on the fact that I am such an idiot.
From the tennessean.com
As dreams that were momentous by night may seem simply silly in the light of day, so the poet and the prophet can discover themselves playing the idiot before a jury of sober eyes.
From the en.wikipedia.org
I also tried idiot-testing it, that is taking photos of subjects with the sun directly in my eyes, or in bad light, or shooting suddenly without giving the camera time to focus.
From the businessweek.com
The charged-couple device that could capture the light, the wireless networks, the way the device I was using was turning me into a bumbling idiot absorbed with the virtual instead of the REAL WORLD.
From the theatlantic.com
Anthony Weiner behaved like a prize idiot in sending out risque photos of himself to women he didn't know, and he compounded that giant mistake with his brazen lying about it when it came to light.