Sen. Rand Paul Randal (Rand) Howard PaulRand Paul says he can't judge 'guilt or innocence' in Breonna Taylor case Overnight Health Care: Health officials tell public to trust in science | Despair at CDC under Trump influence | A new vaccine phase 3 trial starts Health officials tell public to trust in science MORE (R-Ky.) took shots at President-elect Donald Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE and his incoming administration on Friday as part of his annual "airing of grievances" to celebrate “Festivus.”

The holiday was created on the sitcom “Seinfeld,” and every year the Kentucky senator uses the occasion to launch attacks on Twitter.

He started this year's airing with an image from “Seinfeld” and a declaration that the holiday is real.

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Hello again, I hope everyone is having a Happy Festivus! It's once again time for my annual #AiringofGrievances... pic.twitter.com/pZfRtAUtZN — Senator Rand Paul (@RandPaul) December 23, 2016

On the media & #fakenews: Festivus is real, media, so don't try 2 fact check it. And @TheOnion is more accurate than a Brian Williams report — Senator Rand Paul (@RandPaul) December 23, 2016

Paul then pivoted to Trump’s picks for his Cabinet, which by most estimates would be the wealthiest in modern history.

New administration is lookin good. Haven't seen this many billionaires in 1 place since I staked out Bilderbergs w/ Alex Jones. Good times. — Senator Rand Paul (@RandPaul) December 23, 2016

Paul, who leans libertarian, also poked fun at tech billionaire Peter Thiel, an avowed libertarian who is assisting the transition.

.@peterthiel is advising the President Elect. That's great. But his plan 2 make the Statue of Liberty into a digital stop sign is a bit much — Senator Rand Paul (@RandPaul) December 23, 2016

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Paul set his sights on former Ambassador to the United Nations John Bolton, whom he has vowed to oppose in any confirmation hearings for his interventionist views.

I know I've said a lot about @AmbJohnBolton so you're probably expecting me 2 say something nice for the holidays. Nope. #AiringofGrievances — Senator Rand Paul (@RandPaul) December 23, 2016

Bolton was reportedly considered for secretary of Stat before Trump tapped Exxon Mobil Corp. CEO Rex Tillerson.

Paul also mocked former Texas Gov. Rick Perry (R) for his 2011 debate gaffe in which he forgot the name of the departments that he wanted to eradicate. One of those was the Department of Energy, which Trump has chosen him to run.

My favorite Cabinet pick is what's his name, umm it's that guy who wanted to eliminate the Dept. of @ENERGY. Hang on I'll think of it... — Senator Rand Paul (@RandPaul) December 23, 2016

New administration has some great people. But I wanna know who has to tell @realdonaldtrump he can't build a golf course on the South Lawn? — Senator Rand Paul (@RandPaul) December 23, 2016

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