Credit: Charles Eshelman/FilmMagic

Bristol Palin won't have anybody talking trash about her mom!

Thursday night, Bristol, 20, was heckled while riding a mechanical bull at the Saddle Ranch in L.A. After being thrown from the bull, Sarah Palin's 20-year-old daughter confronted her detractor.

"Did you ride Levi [Johnston] like that?" the man yelled, as shown in Hollywood TV's video. "Your mother's a whore!"

The former Dancing with the Stars contestant -- who's currently filming a reality TV show with her 3-year-old son, Tripp, and fellow contestant Kyle Massey -- marched right up to the heckler. "What'd you say?" she asked him directly. 

"You're mother's the f**king devil, dude," the man, who identified himself as being 47 years old, said.

"Oh, is she?" Bristol quipped. "What'd she do wrong?"

"She lives. She breathes," the man said. "If there was a hell -- which I don't believe there is -- she will be there. She's evil."

Unwavering, Bristol snapped back: "Why's that? Is it because you're a homosexual?"

"Pretty much!" her critic replied. "And why'd you say I'm a homosexual?"

"I can tell you are," the daughter of the former Vice Presidential candidate replied. 

The single mom repeatedly asked the man for "one example" of "why [my mother] is a whore," but he continued to tell her that Sarah was "evil."

"Well, you know what," the man snapped. "You don't look anything like [NBA player] Glen Rice. I thought you would." 

"You're right," Bristol said sarcastically. "I'm half African-American. You caught me!"

She stepped away form the conversation, then had yet another confrontation with the angry patron. "You're f**king white trash from Wasilla," he screamed. "Your mom ran that city into the f**king grave. F**k you, you f**king b*tch!"

Without so much as a word, Bristol stormed out of the establishment.

Tell Us: Did Bristol handle herself well given the circumstances?