WATCH----> Trump Imitates Hillary Clinton Stumbling at 9/11 Event

Trump: 'She can't make it 15 feet to her car...Gimme a break'

Trump mocked Hillary Clinton for stumbling during a 9/11 memorial event last month, imitating her fall that doctors chalked up to dehydration.

It's a personal attack Republicans have warned Trump, the party's presidential nominee, to avoid. But while he has refused to engage on the issue, even publicly wishing her well, his tone changed Saturday night after an especially heated week.

"Here's a woman — she's supposed to fight all these different things — and she can't make it 15 feet to her car, give me a break," he said during a rally in Manheim, Pa.

Trump then began to mimic Clinton, the Democratic presidential nominee, toppling over, stepping away from his microphone and pretending to stumble