Conservative pundit Tucker Carlson and his brother Buckley went on a tirade against an aide to Mayor de Blasio, calling her “whiny,” a “LabiaFace” and a “little self-righteous bitch” in a series of e-mails.

Tucker replied to an e-mail from de Blasio aide Amy Spitalnick claiming her tone was “whiny and annoying.”

“I say that in the spirit of helpful correction rather than as a criticism,” Tucker chided.

That’s when Buckley piled on with an e-mail to his brother that he also apparently sent to Spitalnick by accident.

“Great response,” Buckley wrote. “Whiny little self-righteous bitch.” He added, “More like LabiaFace.”

The exchanges were posted on Buzzfeed.com.

When asked for comment, Tucker told The Post that his brother said he meant the remarks “in the nicest way.”