Lightbulb Change

Listen up, buttercup. This joke is so dark, it's practically a black hole. It's playing on the old "how many [insert group] does it take to change a lightbulb" setup, but with dead slaves. The punchline is that they're being used for labor even in death. Your basement being dark means the slave aren't doing their job. And you know what's dark? You not getting it, considering your IQ is probably lower than the number of hairs on your head.