Judge Judy once told a defendant, who was accused of bullying, that she believed the plaintiff because a kid wouldn't go in front of a bunch of people and embarrass herself by saying that someone was calling her 'stupid' and other nasty names if it didn't happen. Also, in two separate cases, she told off the bullies and their guardians, said that they needed to be taught right from wrong, and that they should treat others like they would like to be treated. If you think she's intimidating enough at regular strength, you do not want to see her in Mama Bear mode — and you will if she thinks you have abused or are abusing a weaker person than yourself.
In one case, the defendant was a heroin addict and clearly suffering from the effects in the courtroom. Rather than reprimand, Judge Judy told him to get help and offered her assistance if he needed it.