As a man with good personal hygiene who also doesn't play with his balls, I can offer only an academic opinion. Which is: testicles are vulnerable. When as a child I lived briefly in Barcelona it was common to see men strolling the Ramblas playing "pocket snooker" and spitting garlic onto the hot pavement. Men seem to have a visceral need to reassure themselves that their balls are still intact and safe from harm. Indeed, this procedure of ball-cupping is common across every known culture, and often associated with superstitious/religious rituals that supposedly ward off evil. The English language carries the fossil of such beliefs, as the word "testify" means "to tell the truth while holding one's testes as a sign of veracity."

Anyone who enjoys my articles here on Medium may be interested in my books Why Democracy Failed and The Praying Ape, both available from Amazon.

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store