A president in the Kenyan psyche is a man who rarely smiles or loosens up in public because presidency is serious business.
The man box says do not shed a tear unless it is for an epic sports result. Show no emotion unless it is anger. Show no weakness unless it is for a vice like single malt whiskies. Show no fear except for lightening and hot porridge. Always strive to be in control and powerful, when your friends are watching. Whatever, you do, do not behave like a woman.
Of the stereotypical presidential male traits, playing cool is no longer a leadership liability. Since Obama happened, grownups no longer frown on taking selfies.