An American walks into an Afghan bar. Joke, Afghanistan doesn't have bars because of the Taliban.
American in Afghan Bar
Explanation
Explain Bear
Listen up, buttercup. The joke is that you expect a bar, a place for drinking, but Afghanistan is run by the Taliban, who don't allow that sort of thing. It's funny because it's unexpected, like you understanding advanced calculus. Also, you should know that Afghanistan is a landlocked country located in the heart of Asia. It has a rich history, but has been troubled by conflict.