What does it mean when someone picks their nose in public?

Imagine you’re on the Paris metro or in a waiting area, and someone across the aisle starts picking their nose without hesitation. A broad sense of discomfort. But why is this gesture so popular, despite the fact that it is typically considered inappropriate? Most importantly, what does it reveal about us? Spoiler: it’s more than just clearing one’s nostrils, according to psychologist Alain Foucard.

A reflex. But not so trivial.

You might think it’s simply a physiological gesture, like scratching or blowing your nose. After all, who hasn’t had a plugged nose in the middle of a meeting or on the RER? However, this practice frequently draws unfavorable looks. And for good reason: in our culture, some things are considered private, and picking your nose in public is not one of them.

But be careful; it is not regarded the same way everywhere! In some cultures, this gesture can be interpreted as a utilitarian response to discomfort, with no specific taboo. It merely goes to demonstrate that everything depends on context.