Dead baby jokes are a type of joke that people tell that are often considered very insensitive and can be hurtful to some people. They involve making jokes about babies who have died, which is a very sad and serious subject. It's important to remember that these kinds of jokes can be hurtful to people who have experienced the loss of a baby or who may find them inappropriate. So it's generally not a good idea to tell them, and it's important to be respectful and understanding of others' feelings.