I would say random..

Found this when I was educating myself a little more about Africans and it took me back to something I said a while ago about Africans, respect and how to be a lady. “When meeting most people shake hands or say a normal greeting. Elders are to be respected. Gestures are a little different than in the states. Items are passed and received with two hands. Women add a curtsy. When people talk women usually sit on mats; men sit on higher platforms or a chair. To make eye contact with an elder is considered rude. Public affection is very rude, but friends of the same sex may hold hands.”