FONTANA, Calif. – Her martial arts skills may not be quite what they once were, but still, you don’t mess with Lady Ninja. Authorities say that's a lesson a California man learned painfully after he began shoving around an 82-year-old woman at a Fontana apartment building. “I took him down with one sweep kick under the back of his legs,” Marrujo told The Associated Press on Thursday. “I don’t how she took care of him, but she was like boom boom boom," she said Thursday as she recovered from her bumps and bruises. "But in this case it worked out, and she saved her friend's life," Venzor told The Associated Press.