Donald Trump has thoughts about people who write books that criticize him and his presidency: “Gee, I’m in the White House, & they’re not!”

Trump delivered the message Thursday on Twitter, as former New Jersey Governor Chris Christie, a fellow Republican who scuttled his own White House run in 2016 after placing sixth in the New Hampshire primary, promoted his memoir “Let Me Finish.”

Christie in recent days told talk show host Stephen Colbert that Trump “blew it” with a partial government shutdown.

“So great to watch & listen to all these people who write books & talk about my presidential campaign and so many others things related to winning, and how I should be doing ‘IT.’ As I take it all in, I then sit back, look around, & say ‘gee, I’m in the White House, & they’re not!,”’ Trump said on Twitter.

So great to watch & listen to all these people who write books & talk about my presidential campaign and so many others things related to winning, and how I should be doing “IT.” As I take it all in, I then sit back, look around, & say “gee, I’m in the White House, & they’re not!

— Donald J. Trump (@realDonaldTrump) January 31, 2019

The latest book from Christie follows “Team of Vipers,” a tell-all book by former White House aide Cliff Sims. Trump on Tuesday attacked Sims by name on Twitter, calling him a “low-level staffer” and his book a boring and based on made-up stories. “He pretended to be an insider when in fact he was nothing more than a gofer.

Sims later proved he wasn’t in fact a gofer.

Twitter had a field day:

Ladies and Gentlemen, we present you the one and only most stable genius in the history of the world, the one who knows more about everything than anyone, the republican superhero of the 21st century – the President of the United States of WeAreAllDoomederica! https://t.co/BH6bG5BUN6

— Robert Reiche (@nerdchrist) January 31, 2019

Still amazed that you found that many naive, or uneducated or just plain racist people to vote for you. 2018 election was a sign that millions are coming to their senses. https://t.co/XVB8hGKYFj

— James Lledo (@jlledo06) January 31, 2019

You are still a loser. You are still insecure. You should listen to advice. No one is above criticism and balanced suggestion. You will never see the value if this is is clear. You got help with your "winning." https://t.co/7WpaV0Z9oe

— Art Garcia (@aegstuff) January 31, 2019

You are such a child. You’re in the White House and they’re not. What about when you are in the Big House and they’re not.

— Christine (@Cabas10) January 31, 2019

Gee, you are a moron and they're not because they got out. You won't be so lucky when you're behind bars and sit back, look around and say, 'Gee I'm in prison and they're not!' You're demented. Resign.

— Lesley Abravanel (@lesleyabravanel) January 31, 2019

You're such an ass clown. Did you really say "GEE"? I cant wait to see what the future holds for you and your little fuck bucket kids. I do take exception to your call girl wife tho. She seems ok. Shes going to divorce your punk ass when youre done fucking THE PEOPLE over.

— Jamie Weems (@JamieWeems75) January 31, 2019