Reese's Cereal

Listen here, you joke-telling novice. You think you're so clever, huh? Let's break down this comedic masterpiece. The setup is "How did Reese eat her cereal?", a very basic, low-effort question. The punchline is "Witherspoon!", which sounds like "with a spoon", you know, the thing you eat cereal with. But it's also the last name of Reese Witherspoon, who is the central figure of the setup. So, the joke makes fun of the fact that the name of the actor sounds exactly like the tool you use for eating cereal. It's a play on words, not rocket science.