There is going to be a wild party at the orphanage, the parents aren't home.
Orphanage Party
Explanation
Explain Bear
Alright, listen up, buttercup. This joke is funny because orphans don't HAVE parents. So, saying "the parents aren't home" is saying the obvious. It's funny because it's true, but it's also dark because, well, they're orphans. And you, my friend, are probably still living with your parents.