President Obama Makes 'One Last Dad Joke' as He Prepares to Leave Office

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President Barack Obama has "one last dad joke" up his sleeve.

The 55-year-old POTUS showed off his comedic side on Thursday, with a classic dad-like response to a tweet posted on NASA's Mars Rover Twitter account.

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"Signed, sealed, delivered. I carried @POTUS's signature to the surface of #Mars," read the Mars Rover tweet alongside a photo of Obama's signature in space.

The commander in chief replied, "That is out of this world. Thanks @NASA."

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Naturally, the White House's Instagram page couldn't resist sharing a snapshot of his tweet with the caption, "One last dad joke."

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All jokes aside, it's been an emotional week for the president, who gave a rousing farewell speech in Chicago on Tuesday. During one of the many highlights in the
emotional address, Obama praised his wife, first lady Michelle Obama.

"Michelle – for the past 25 years, you’ve been not only my wife and mother of my children, but my best friend," he said while getting emotional as the audience cheered at the heartwarming moment. "You took on a role you didn’t ask for and made it your own with grace and grit and style and good humor. You made the White House a place that belongs to everybody, and a new generation sets its sights higher because it has you as a role model. You've made me proud. You've made the country proud."

Two days after the speech, Obama surprised Vice President Joe Biden with the Presidential Medal of Freedom.

"You know, as long as there's breath in me, I'll be there for you," Biden told Obama. "And I know it's reciprocal."

See more on the tear-jerking ceremony below.