Something that is so dirty and so filthy that it is lower than scum.
Popularized by Cenk Uygur, host of The Young Turks, the largest online news show in the world.
"That is what Grover Norquist is. Because if you have money and you want lower taxes, and you want to screw over the middle class, the 99%, and you want to give everything to the rich and to the top corporations, Grover is on his knees, ready for you. He will do whatever it takes; he will intimidate Republican politicians, he will fluff you up. He will do whatever it takes because he is lower than scum, whore of the earth."
-Cenk Uygur 2/13/12