A person whose personality and/or physical appearance is so vile and repulsive that it inconceivable that they originated in a human womb. The only explanation for their existence is that they spontaneously arose from a pile of mud and/or fecal matter.
Nancy Grace is a mudbaby, and so is that annoying chubby woman on her show that quotes Shakespeare.
A place where you can lose all your money, gamble with loads of degenerites, and slap a program against your thigh while yelling nonsence like an asshole at the top of your lungs.