Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE shot back at Mitt Romney on Saturday after the 2012 presidential candidate intensified his attacks on this year's presumptive GOP presidential nominee this weekend.

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During a rally in Pittsburgh, Pa., Trump mocked Romney for his 2012 election loss to President Obama and vowed that his campaign would succeed where Romney's failed.

“The guy was on yesterday, CNN. And I said to myself, ‘It’s absolutely pathetic.’ He lost. He choked — like a dog, he choked. And now it’s time for somebody else. We’re gonna win, folks. I don’t choke.”

On Friday night, Romney blasted Trump for promoting “trickle-down” racism, misogyny and bigotry. The real estate mogul mocked him for the attacks.

“’He’s a trickle-down racist and a misogynist,’" Trump said, paraphrasing Romney. "Now I know why he lost — you talk about communication.

“He doesn’t know what a misogynist is,” he added.