Sen. Rand Paul (R-Ky.) on Sunday marked Festivus by airing grievances and cracking jokes about several political figures, including President 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 GOP Sens. Lindsey Graham Lindsey Olin GrahamSenate GOP aims to confirm Trump court pick by Oct. 29: report The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Senate GOP sees early Supreme Court vote as political booster shot MORE (S.C.) and Ted Cruz Rafael (Ted) Edward CruzCruz blocks amended resolution honoring Ginsburg over language about her dying wish Trump argues full Supreme Court needed to settle potential election disputes Press: Notorious RBG vs Notorious GOP MORE (Texas).

"You’ll be surprised to learn I have some grievances with people in Washington, fellow members and others. It’s time to talk about them now, because it’s the holiday season," Paul tweeted on Sunday as part of a long Twitter thread about a variety of lawmakers.

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Festivus is a made-up holiday that served as the theme of a “Seinfeld” episode. It involves voicing grievances about those who have disappointed over the year. Paul marked the holiday in 2017 by airing grievances about figures such as former Sen. Harry Reid (D-Nev.).

He began his Festivus grievances by mocking President Trump for his problem of "keeping staff around him."

"But they solved the problem. I went to the White House the other day and there were at least 14 ppl in Mick Mulvaney masks," Paul tweeted, referencing the new acting White House chief of staff who is also the director of the Office of Management and Budget.

"Mick is a good friend of mine, in fact a lot of people probably don’t remember he was the national co-chair for my Presidential campaign. Uh oh, probably just got him fired," he continued, with an image of Trump's signature line on the TV show "The Apprentice": "You're fired!"

Paul goes on to give White House senior adviser Jared Kushner Jared Corey KushnerAbraham Accords: New hope for peace in Middle East Tenants in Kushner building file lawsuit alleging dangerous living conditions Trump hosts Israel, UAE, Bahrain for historic signing MORE credit for his efforts in passing a criminal justice reform bill, joking that before he got to know him, he "was a bit suspicious he was the kid from the Omen movie all grown up."

He later mocks Cruz for the beard he grew recently, while discussing Congress's decision "to shut down the government because they aren’t spending enough money.

"I got suspicious when Ted Cruz came back from Thanksgiving break with that beard."

Congress has now decided to shut down the government because they aren’t spending enough money. I got suspicious when Ted Cruz came back from Thanksgiving break with that beard. pic.twitter.com/y0r3dpFbbG — Senator Rand Paul (@RandPaul) December 23, 2018

He then mocks Graham for his opposition to Trump's decision to pull U.S. troops from Syria.