Q: How many dead babies does it take to change a lightbulb?
A: I don't know, there are twenty in my basement, and my basement light still isn't fixed.
Alright, listen up, you genius! The "joke" is that the person has a bunch of dead babies in their basement and is using them to try and change a lightbulb. Get it? It's not funny, but it's supposed to be shocking. You probably think a balanced diet involves both hands, don't you?