[He raises his eyebrows slightly, and repeats himself.] Black hole. If you don't know what that is, it...sucks you up, basically. And that kills you.

[The term for the other "things" is actually "fustercluck," but he doesn't know it.]

No idea what these other things are. They're...giant balls of moving body parts, if that makes any sense. They try to crush you and make you a part of them, so it's best to just stay clear.