murderer's thumb
denotes the powerful temper of those who carried it. His thumb has a short first phalange (section) and is broad. The tip of the thumb is fleshy and the thumbnail is short and broad. According to those who know, people with clubbed thumbs however are strong willed and can control their emotions. People possessing this type of thumb are animalistic in nature and thought system. They bear brutality of Elementary type. They can harm or murder out of callousness. They lack premeditation and depth. They are European royalty
When you have a thumb that is abnoramally short. I have a murderer's thumb