Experiencing feelings of deep moral disgust or guilt creates an overwhelming physical desire to clean oneself, a psychosomatic phenomenon creatively named the Macbeth effect.

A closer look

Experiencing feelings of deep moral disgust or guilt creates an overwhelming physical desire to clean oneself, a psychosomatic phenomenon creatively named the Macbeth effect. If you tell a horrific lie, cheat on a test, or engage in behavior you find ethically repulsive, your brain essentially gets confused and translates this abstract moral dirtiness into a desperate need for a literal hot shower. This proves that our highly advanced philosophical concepts of right and wrong are still hopelessly tangled up with our primitive biological hardwiring for avoiding physical diseases and parasites. It is a wildly inconvenient evolutionary glitch that turns massive moral failings into a sudden, frantic urge to buy premium antibacterial soap, completely failing to address the actual ethical disaster while ensuring your hands are exceptionally hygienic when you finally face the devastating consequences of your actions