WATCH: California Democrat delivers epic smackdown to ‘ignorant bigot’ who mocked trans children
Rep. Zoe Lofgren (D-Calif.) addresses what she called the 'offensive' anti-trans testimony of Gail Heriot (Screen cap)

U.S. Rep. Zoe Lofgren (D-CA) isn't one to suffer fools lightly. So when she heard testimony this week from Gail Heriot of the United States Commission on Civil Rights claiming that transgender children were simply delusional young people living out immature fantasies, she let her have it.

What set Lofgren off was Heriot's comparison of transgender children to children who insist that they're really Russian princesses.

"If I believe that I am a Russian princess, that doesn’t make me a Russian princess, even if my friends and acquaintances are willing to indulge my fantasy," Heriot said.

"I've got to say, I found this rather offensive, and it says to me that the witness really doesn’t know anything and probably has never met a transgender child who is going through, in almost every case, a very difficult experience finding themselves," Lofgren shot back. "I think it’s very regrettable that comment was put into the record, and I think it’s highly offensive."

Heriot tried to respond, but Lofgren shut her down by calling her an "ignorant bigot," which led Iowa Republican Steve King to tell her that she was "out of order."

"We allow witnesses to say offensive things, but I cannot allow that kind of bigotry to go into the record unchallenged," Lofgren replied.

Check out the whole video for yourself below.