The guys over at Universe Today have a sense of humor:
Fraser: Why do people think we might live in a black hole? That seems kind of crazy to me.
Pamela: It's a lot of science fiction. There's this idea in science fiction that you can fly into a black hole and emerge in a completely different part of our universe, in an alternate universe… and so from these fiction writings, the idea has gotten into the zeitgeist that you fly into a black hole and you fly into a different universe – which means a universe can be inside of a black hole.
The problem is real black holes just lead to death.
Fraser: I guess that's the question – it's like a frog asking if I hop into that blender, will it lead me to another universe?
Fraser: No, no it won't – a universe of pain.