TRENTON -- Fear not, Gov. Chris Christie says: Donald Trump was not holding him or his family hostage on Super Tuesday night.

Nor was the New Jersey governor gazing into space regretting his decision last week to endorse Trump, his longtime friend whom he says is the Republican with the best chance of defeating Democratic font-runner Hillary Clinton in this year's presidential election.

Christie knows the internet had a lot of fun at his expense as images of him looking awkward, wide-eyed and morose standing behind Trump during a celebratory news conference after the the reality star won seven states. Memes of the duo dominated social media Wednesday, overshadowing Trump's big night.

Republican presidential candidate Donald Trump, accompanied by New Jersey Gov. Chris Christie, left, speaks during a newsconference on Super Tuesday primary election night in the White and Gold Ballroom at The Mar-A-Lago Club in Palm Beach, Fla., Tuesday, March 1, 2016. (Andrew Harnik | The Associated Press)

"I don't know what I was supposed to be doing. I was standing there listening to him. All these armchair psychiatrists should give it a break," a subdued and affable Christie said during a freewheeling one-hour-and-47-minute press conference Thursday.

"You never look good standing behind someone," he said.

Christie explained he and Trump were not at a celebratory rally with applause and balloons. The billionaire front-runner met with reporters at club house in his development in Florida. Aside from the press and campaign staffers, about 25 people were there.

"It wasn't the kind of circumstance where I would be standing up and cheering and smiling. He was answering questions from the national press corps and I was listening," he said.

Noting that he "has had a lot of fun on the internet with people too," Christie said with a sly smile:

"I want people to know who were concerned I was not being held hostage. I was not thinking 'Oh my God, what I have done.' I was standing up there supporting the person I believe is the best person to beat Hillary Clinton among the remaining Republican candidates. It's why I endorsed him."

Christie also suggested the "internet freak-out" ensued because of "the hysteria of the people who oppose my Trump endorsement. They want to read into it anything that can be negative. That's fine. I understand that. I could care less."

Christie also challenged the false notion of Trump dismissing Christie, banishing him to a private plane after campaigning together Friday and Saturday. Trump is heard on video telling the governor, "Go home."

"He and I laughed about it," the governor said. "He said, 'you gave me two days, there's a plane waiting for you, don't wait for my 45 mins speech...He said, 'go home and see your wife."

Christie called the press conference Thursday after The Star-Ledger Editorial Board, the editorial board for the six Gannett newspapers in New Jersey called on him to resign if he intended to be out on the road with Trump rather than commit to his day job.

"I am here," Christie said. "I am back to work."

NJ Governor Chris Christie holds a long press conference at the State House 30 Gallery: NJ Governor Chris Christie holds a long press conference at the State House

Susan K. Livio may be reached at slivio@njadvancemedia.com. Follow her on Twitter @SusanKLivio. Find NJ.com Politics on Facebook.