'two whoops in hades'

whts the meaning of 'two whoops in hades'?

The complete sentence usually goes something like: I don't care two whoops in Hades what you think. or I wouldn't give three whoops in Hades for that piece of junk. A whoop is a kind a shout or yell. The idea is that there's a whole lot of yelling and screaming going on in Hell so a few more is practically nothing.