(NEWSER) – Donald Trump has promised to start acting more presidential, but there wasn't much sign of it at a rally in Nevada Monday night, where he told the crowd ahead of Tuesday's caucus that he would like to punch a protester in the face.

"He's smiling, having a good time," Trump complained as a heckler he described as "nasty as hell" was hauled out of the Las Vegas rally, CNN reports. "You know what they used to do with guys like that when they were in a place like this? They'd be carried out on a stretcher, folks," said Trump. At the rally, Trump denounced Ted Cruz as "sick" and a liar, the Guardian reports. "This guy Cruz has lied more than any human being. He holds up the Bible, and he lies," Trump said, complaining about a Cruz ad accusing him of siding with the federal government in land disputes.

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