A stubborn or rigid person, who never changes himself or his attitude even through hardships or in unfavorable circumstances
my friend was imprisoned two years back now he is released but he has not changed at all , he has not mended his ways, he still do the criminal activities , he seems to be a "Dog Tail" which can never be straighten even kept in the pipe for long.
Get the Dog Tailmug. 
Person 1: Gabe Newell is fat and ugly and steam sucks.
Person 2: I know, I Hate him. I wouldn't be near him even if I got paid!
Person 2: I know, I Hate him. I wouldn't be near him even if I got paid!
Get the Hatemug.