As Michael Bains might say - "Silly humans!"
Sub-prime mortgages were something on my radar, until one of my Facebook buddies (and former primary schoolmate) posted this on my FunWall.
I hate FunWall, but I love this. This says all you need to know about the whole stupid mess - and how financial engineers can sell anything.
And it's hilarious, too.
Personally, I think that there should be arrests to come out of this, but we won't see any. Enjoy.
Standard but necessary disclaimer: This is not advice. Only a complete idiot would think that any of this constituted advice. It's not even vaguely reasonable to consider this to be advice. If you are in any doubt as to the content of this, see a good, independent financial adviser immediately. They do exist.