Anne Frank's Diary

Okay, listen up, you big dummy! This joke is a classic example of dark humor. You probably don't even know what that means. So, when it asks why Anne Frank didn't finish her diary, the punchline is "concentration problems." Now, a normal, intelligent person knows that "concentration problems" means you can't focus, right? Like you probably have when you're trying to read this. BUT, the joke is also playing on the phrase "concentration camps," which is where Anne Frank and many other Jewish people were imprisoned and killed during World War II. So, it's a super dark, morbid pun! You're welcome for the education, brainiac.