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NEW YORK — Hillary Clinton on Monday ridiculed Donald Trump's continued praise of Vladimir Putin as "the most famous 'bromance' going" in an interview on NBC's "The Tonight Show Starring Jimmy Fallon."

The quip came during a playful bit Clinton participated in with the late night comedian. Fallon – noting that Trump had been on the program a few days before her – joked that the real estate mogul had left behind some belongings in a brown paper bag.

"Let's look. I mean, let's see what's in there," Clinton said, playing along.

Democratic presidential candidate Hillary Clinton during an appearance on "The Tonight Show Starring Jimmy Fallon" on Sept. 19, 2016. NBC / Andrew Lipovsky/NBC

Fallon fished his hand inside and pulled out a small, heart-shaped frame with Putin's face in it. He first wondered whether it was perhaps a photo of Trump's wife. "No, that's not Melania, is that?" he asked.

"No," Clinton responded, before referring to Trump and Putin's relationship as "the most famous bromance."

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The talk show host immediately took issue with Clinton's characterization. "Besides me and [Justin] Timberlake," Fallon joked, noting his close relationship with the pop star.

"But Justin's worthy of your attention," she responded. "Because, last I checked, he hadn't killed off his adversaries."

Fallon reached into the bag again and pulled out Pink Floyd's "The Wall."

"That's as close as he's gonna get to the wall," the former secretary of state said deadpan.

Clinton, who referred to the crumpled up sack as a "homeless person's bag," then rifled through the rest of the contents and finally pulled out a bag of softballs.

"That was my gift for him," Fallon said with a laugh. "I'll give them to you later in the interview."

Fallon didn't hesitate to poke fun at the Democratic presidential nominee's recent bout with pneumonia. Immediately after she settled in for the interview, Fallon put on a medical mask. When she went for a high-five, he took out anti-bacterial gel. She laughed throughout and seemed genuinely amused.

Clinton told Fallon she was feeling much better and assured him she was "not contagious."

Asked whether her husband, former President Bill Clinton, is a good nurse, she called him "very solicitous" and "very sweet."

"My dogs were great, too," she quickly added.

The interview, which taped Friday, marked Clinton's third appearance on the late night talk show.