'Thug' takes $hot at gun granny

This pistol-packing granny, who shot a man she accused of mugging her in her wheelchair, wishes she had finished the job -- because now, he's suing her for millions.

"I'm a peaceful person. I wish that I had killed him," said Margaret Johnson, 59, whose grandfather, Ellsworth "Bumpy" Johnson, once ruled Harlem's underworld and was immortalized in several hit movies.

"I'm not spending a dime on that son-of-a-bitch," she said. "This boils my blood. Why is he picking on me again?"