Donald Trump interrupted Hillary Clinton to call her a “nasty woman” after Clinton landed a jab about Trump’s tax avoidance during the final presidential debate Wednesday.

“My Social Security contribution will go up, as will Donald’s—assuming he can’t find a way to get out of it,” Clinton joked in response to a question about entitlement reform.

“Such a nasty woman,” Trump said as he leaned into the microphone.

The reaction on Twitter was swift:

Trump has landed similar epithets against Clinton in the past, calling her “the devil,” and saying he would appoint a prosecutor to bring charges against her, among other things.