How many babies does it take to paint a wall?
I don't know, either. It depends on how hard you throw them.
Wall Painting With Babies
Explanation
Explain Bear
Alright listen up, buttercup. The joke is funny because it takes a turn for the dark side. You expect a normal answer to a question, but instead, it's all about chucking babies at a wall. Why is this funny? Because you are bad and should feel bad.