Zing! President Obama and Bill Clinton Exchange Jokes on Twitter

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Twitter, where world leaders come together to publicly poke fun at one another since 2015.

President Barack Obama made his Twitter debut on Monday with the appropriately-titled account @POTUS, offering up a cheeky proverbial mic check.

Among the first to welcome the sitting President of the United States to the social media platform was none other than President Bill Clinton, as wife Hillary Clinton's bid for the Oval Office is in full swing.

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Hilarious. But leave it to Obama -- whose Twitter bio, for the record, reads: "Dad, Husband, 44th President of the United States" -- to have a perfect response quip.

ZING! (Alright guys, now back to work please.)