Self-Raising Flour

What flour do orphans use whilst making cakes? Self-raising.

Explanation

Experiment

Explain Bear

Listen up, buttercup. This joke is for dummies. "Self-raising" is a type of flour, get it? But it sounds like "self-raising" like orphans raising themselves! Because they ain't got no parents, dingus. You probably still don't understand it because you are not smart.