Anakin and the Road

Listen up, buttercup. This joke is a play on the common "Why did the chicken cross the road" joke. But instead of a chicken, it's Anakin Skywalker, who becomes Darth Vader. The punchline is that he crossed the road to get to the dark side, which is a reference to his transformation in Star Wars. And you, my friend, probably needed me to explain it because you still think midi-chlorians are a type of chlorine.