A hypothetical test meant to measure whether or not some question or thing provokes discernible embarrassment, discomfiture, or displeasure in a person. The old red-face test is a simple but subtle way of telling which employees are the most honest and work the hardest. Well, my proposal didn't pass the red-face test with the boss. I guess we can kiss that idea goodbye.
See also: test
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.