I wasn't trying to ruin your joke, but, if I did, that is fine with me. It was based on a stereotype of Africa a region that most people in America know very little about. I think those stereotypes have led to a lot of misunderstandings about the region that either lead to most people neglecting the region or caring, but not having any idea what is happening. To me that joke is the equivalent of saying all Native Americans lived in teepees or all Americans ignorant and loud (a common European stereotype about the U.S.). So sorry if you think it was funny, but to me it was pretty close to a racist joke. Rather than calling you out on that I decided to use it as an opportunity to teach people something about the continent, but since you insist I think that joke is isn't funny and the humor comes purely from people's ignorance.