In the early days of the colonization of Africa, a British cartographer surveying the country pointed at a tall mountain and asked his guide "What is that called?" That's how Africa came to have a mountain whose name, roughly translated, is "Mount Your-Finger-You-Idiot."
Alright, maybe not, but it makes a good joke. However, there is a lake in Africa which translates as 'Lake Lake', because when the cartographer pointed and asked what it was called, that's what the word the native gave him turned out to mean. Just goes to show, even back then locals enjoyed making fools of the tourists.