Late night host Jimmy Fallon mocked President TrumpDonald John TrumpNearly 300 former national security officials sign Biden endorsement letter DC correspondent on the death of Michael Reinoehl: 'The folks I know in law enforcement are extremely angry about it' Late night hosts targeted Trump over Biden 97 percent of the time in September: study MORE's unveiling of his 2020 campaign slogan "Keep America Great!" Monday night, supplying some of his own suggestions for the president's reelection campaign.

During his monologue on "The Tonight Show," Fallon joked that Trump seemed unaware that he was not required to enunciate the exclamation point at the end of his reelection slogan during a recent rally in Pennsylvania.

"Exclamation point over here!" Fallon said, doing an impression of the president. "The guy running the teleprompter was like, 'Again, Mr. President, you don't have to say those. They're just part of punctuation.' "

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"Republicans are like, 'what have we done, question mark? What have we done, question mark?" he added, to laughs.

Fallon went on to suggest some other slogans he said more accurately depicted Trump's message.

"That's right, Trump announced that his 2020 campaign slogan will be 'Keep America Great!' There were actually a bunch of other slogans he almost went with instead; I'll show you what I mean," Fallon said.

"For example, there was also: 'I'm with hair,' " he added. "He also thought about going with, 'I mean, it can't get any worse than it already is.'"

"And finally, he almost went with, 'Come on, doesn't some small part of you sorta want to see where this all goes?'"

Fallon, unlike other late-night hosts, has largely stayed away from politics since Trump took office, though he has occasionally made jokes at the president's expense.

Fellow late-night host Jimmy Kimmel made headlines last year with his stance against the GOP's efforts to repeal ObamaCare after his son was born with a heart condition.