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 / Updated  / Source: TODAY
By Elizabeth Murray

Republican presidential front-runner Donald Trump appeared on "The Tonight Show with Jimmy Fallon" on Friday, and at times it felt like we were seeing double.

Trump, at the start of the show, participated in an "interview" with "the only one qualified to interview" him — himself.

"Me interviewing me?" Trump said to Fallon (who was sporting a Trump wig and some spot-on impressions of Trump's hand gestures and facial movements). "That's what I call a great idea."

In the skit, Trump discussed how he would create jobs ("I'd just do it," he said) and how he would get Mexico to build a wall on the U.S. border ("Easy: I'll challenge them to the biggest game of Jenga ever").

After the skit, Trump sat down with Fallon for a sit-down interview, where he discussed what it's like being the front-runner and whether or not he would ever apologize.

"I think apologizing is a great thing, but you have to be wrong," Trump told the late-night host. Adding, "I will absolutely apologize sometime in the hopefully distant future if I'm ever wrong."

Trump also took some time to talk about fellow 2016 presidential candidates.

On Hillary Clinton, Trump said: "She's had a very, very tough time, and I think it's gonna be very tough for her. I've never seen anything like it. I feel terribly about it."

As for GOP candidate Carly Fiorina, Trump said, "I think she's a very nice woman." Adding, "I think that she's gonna have a hard time. She had a very, very rough past, corporately."