In what pretty much anyone could have seen coming, Twitter users slapped back at Donald Trump on Saturday by calling him a “so-called president” after he attacked United States District Court jurist James Robart as a “so-called judge” due to his Friday night ruling.

Trump launched a bitter tirade at Robart Saturday morning, less than twelve hours after the judge temporarily slapped down his travel ban.

Writing, “The opinion of this so-called judge, which essentially takes law-enforcement away from our country, is ridiculous and will be overturned!” Trump opened up a can of worms among many Twitter users who see him as a illegitimate president due to Russian interference in the election and losing in the popular vote by 3 million.

Trump, who is highly sensitive to any suggestion that he is not the rightful president, came under withering attack on Twitter under “So-Called President.”

A sampling, and Trump’s tweet that set off the firestorm, below:

The opinion of this so-called judge, which essentially takes law-enforcement away from our country, is ridiculous and will be overturned!

— Donald J. Trump (@realDonaldTrump) February 4, 2017

This "so-called" judge was nominated by a "so-called" President & was confirmed by the "so-called" Senate. Read the "so-called" Constitution https://t.co/xQotyL1kHM

— Adam Schiff (@RepAdamSchiff) February 4, 2017

This is not the first time the so-called president attacked a judge. https://t.co/nckMuzrZbT

— Mayumi Narako (@MayumiNarako) February 4, 2017

So-called President Is Upset https://t.co/8MK0RP4sOe

— Charles P. Pierce (@CharlesPPierce) February 4, 2017

No "so-called." Judge Robart is a GWB appointee who was confirmed 99-0. We are watching closely your contempt for our Judicial Branch. https://t.co/k1La1mPlHj

— (((Rep. Nadler))) (@RepJerryNadler) February 4, 2017

Uh-oh, even @realDonaldTrump can't figure out how to defend his crazy actions. He's now just shouting campaign slogans. #SoCalledPresident https://t.co/MaBvaXrAcS

— Ted Lieu (@tedlieu) February 4, 2017

shut the fuck up u so-called president https://t.co/uYJUuwyPUk

— z☯ (@itsxzoe) February 4, 2017

The "so-called" President was punked by a real judge. #MuslimBan

— BlackHistory-101 (@share_black) February 4, 2017

Would you like me to send you a copy of the constitution So-called President? Free two day shipping pic.twitter.com/O9N1tQJpo2

— Sean Lawrence (@Sean_Lawrence_) February 4, 2017

#ThingsYouThoughtWereReal That Compassion, Tolerance, and Respect would win over Cruelty, Prejudice, and Ignorance by a So-called President pic.twitter.com/N8hNY0DjZw

— Cobalt West (@cobaltwest) February 4, 2017

The Judge went through due process, did not depend on Russia hacking, FBI nor denigrate the competition, unlike the So-called president.

— Ladybug #DemForce (@Ladybug014) February 4, 2017

A President knows they are subject to the law. A so-called president not so much it seems. #SoCalledPresident https://t.co/KMMNckuJ0g

— Kevin Huinink (@kevinhuinink) February 4, 2017

My So-Called Judge, the new Claire Danes judge show

— Josh Barro (@jbarro) February 4, 2017

My So-Called Judge has been practicing law since 1973 & written several dissertations. My so-called President can't even formulate a tweet.

— PoliticalGroove (@PoliticalGroove) February 4, 2017

If @GOP loves America you'd invoke the 25th amend before the so-called President's found under the Resolute desk mumbling tweets to himself.

— Jeffrey Wright (@jfreewright) February 4, 2017

Trump: That so-called WA judge? Fire him.
Staff: Sir, judges can't be fired.
Trump: Says who?
Staff: The Constitution.
Trump: Never read it.

— George Takei (@GeorgeTakei) February 4, 2017