If the human body is 60% water That means Africans are 100% human
Why would you say something like that? Is this what you believe about Africans? I don't get it.
It's because they are poor, they are all skin and bones.
Using such stereotyping in your verbal commentary is just not totally true. Be aware there are all kinds of terrible things that people can't help happen to them, what if you lived in a very poor country? I doubt you would enjoy jokes directed towards you this way.