Trump insults everyone but Christie, and Christie says Trump out of line

Throughout the campaign season, Chris Christie and Donald Trump have been pulling their punches when it comes to discussing one another. They've described each other as friends.

Trump has even tossed out the possibility of Christie serving as his vice president.

But after Trump infamously, brashly and unreservedly went after his other competitors in a 90-minute speech during a campaign stop in Iowa Thursday night, Christie — who was spared The Donald's wrath — is beginning to jab.

“When you run for president of the United States, everything that comes out of your mouth matters. I think that kind of stuff is, you know, not the kind of stuff that a candidate for president of the United States should be talking about,” Christie said on Laura Ingraham's radio show Friday.

Christie's comments — some of the closest to outright criticism Christie has offered of Trump – come after Trump equated Ben Carson’s childhood “pathological temper” to the illness of a child molester and questioned Carson’s religious awakening.

“How stupid are the people of the country to believe this crap?” Trump asked in Iowa. He also called Marco Rubio “weak, like a baby" and said he would "bomb the s——" out of ISIS. He called fellow candidate Carly Fiorina "Carly whatever-the-hell-her-name-is."

Also on Friday, Christie, speaking to Scott Brown on Fox News Radio, said Trump's comments are not "the kind of things that should be coming out of the mouth of a candidate for the president of the United States."

Trump had hinted during an appearance Wednesday in New Hampshire that he'd consider Christie for a possible No. 2 — though analysts tell New Jersey 101.5 it's not a particularly likely pairing.  The governor himself told New Jersey 101.5's Eric Scott during the September Ask the Governor that he and Christie would make "quite the team" but said he's no second fiddle: “I don’t know if Donald would love being my vice-president anyways."

Friday's criticism of Trump follows a somewhat lighter critique Christie gave in Iowa Thursday.

Christie said the Trump people see in the media is the same one his friends know in private, mimicking him: "Everyone in Washington is a loser. I’m a winner. I’ll win in Washington. Everyone else is a loser." Christie also described Trump as "generous" and "nice," but said he shouldn't be president.

"I’ve told him this to his face, so I’m not saying anything now that I haven’t said to Donald. I said ‘Donald, you don’t want this job. This does not play to your skill set. If the speaker of the House is opposed to one of your bills, you can’t fire him.’ It’s just not the way it works, man.”