Hillary Clinton and her running mate, Tim Kaine, won’t come up with a dig to counter Donald Trump’s use of “Crooked Hillary,” instead promising to play nice.

“I don’t call him anything. And I’m not going to engage in that kind of insult-fest that he seems to thrive on,” Clinton told CBS’s “60 Minutes” in an interview with Kaine that aired Sunday.

Virginia Sen. Kaine added, “Most of us stopped the name-calling thing about fifth grade.”

Clinton also said that the chants of “lock her up” directed at her at last week’s Republican National Convention made her feel “very sad” for the GOP delegates.