Self-Raising

Listen up, buttercup. The joke asks what kind of flour you'd buy for an orphan. The answer is "self-raising," which is a type of flour that already has baking powder in it, so it rises on its own. But it's also a play on words, see? Because an orphan is someone who has to raise themselves, get it? Since you're reading this, I guess you needed help to understand this simple joke. Sad.