Why does Obama love to laugh and Putin never laughs?

Putin Russia, Russians are used to saying' eggplant' or remembering' keep smiling' when taking pictures. Most men prefer a smiling expression on their faces. In some countries, laughter is not a sign of warmth or even respect. In those countries, your smile may prove your stupidity-a weird idiot. And Obama is a mulatto. His father is an exchange student from Africa to America. He hooked up with an American girl and gave birth to Obama. Then his father returned to Africa. Now Obama's grandmother, father and brother are all in Africa. So he must have been influenced by many African cultures. In that country, laughter may arouse suspicion. If someone will pull you up with a smile, you don't know if he means well or wants to cheat you. Their laughter will be associated with dishonesty, which may be related to the backwardness of these countries.