Broken Pencil

This is a pun, using the word "pointless", which literally means lacking a point, like a broken pencil, but also figuratively meaning having no purpose, or being a waste of time. The setup is a question that is immediately answered by the punchline.

• Pencil
• Stationery
• School
• Call
• Mind
• Writing

• Me: Knock knock. Friend: Who's there? Me: A broken pencil. Friend: A broken pencil who? Me: Nevermind, it's pointless.
• What did the pen say to the pencil? The pen said, "You're pointy."
• What do you call a pun that's bad? A bad pun.
• What do you call a pen with no head? DeCAPitated.