Why do villains keep rubbing their hands together?

That is why villains rub their palms but slowly & hence its the speed of rubbing your palms depicts your emotions (Evilness in this case). Salespeople are taught that if they use the palm-run gesture when describing products or services to prospective buyers, they should be certain to use a fast hand action to avoid putting the buyer on the defensive. read more

A slow rubbing of the hands together communicates sneakiness, and is associated with selfish gain, whereas a fast rubbing of the hands communicates more general enthusiasm. Villains in films usually rub their hands in expectation of getting their hands on that million dollars they’ve stolen, or in expectation of taking over the world. read more

In drama, rubbing hands can signify various things, such as a miser rubbing his palms together over money, Lady Macbeth washing the blood off her hands, a villain having just done a wicked deed, or a person simply anticipating a journey, a good meal, or meeting with a boyfriend/girlfriend. read more