Definition
An in-joke is a humorous reference that's only funny if you're "in" on the shared experience or context. It's like a secret handshake, but with words. 😂 The humor stems from the exclusivity. If you have to explain it, it's no longer an in-joke. Think of it as the opposite of a universal joke that everyone understands. It creates a sense of belonging among those who get it. Imagine it's like a meme only you and your friends know.