Это уже что-то из Набокова, по-моему

[birdwatcher]

'Gaydar' -- the purported ability to infer whether people are gay or straight based on their appearance -- seemed to get a scientific boost from a 2008 study that concluded people could accurately guess someone's sexual orientation based on photographs of their faces. In a new paper, researchers challenge what they call 'the gaydar myth.'
http://www.sciencedaily.com/releases/2015/09/150903160505.htm