At last night's Presidential debate, Republican presidential candidate and professional whiner Donald Trump outdid himself.

Not only did he accuse "somebody sitting on their bed that weighs 400 pounds” of hacking the DNC, announce that not paying federal taxes makes him "smart", and declare his temperament to be "winning", he also felt the need to have a go at Rosie O'Donnell. Again.

Trump's comments about O'Donnell came after Clinton brought up Trump's many sexist comments, saying, "This is a man who has called women pigs, slobs and dogs."

"Hillary is hitting me with tremendous commercials. Some of it I said in entertainment, some of it said to somebody who has been very vicious to me, Rosie O'Donnell," Trump responded.

"I said very tough things to her and I think everybody would agree she deserves it and nobody feels sorry for her."

So O'Donnell responded in the most rational way possible. By calling him an "orange anus" on Twitter.

https://t.co/EvxYa7A4bL --- the 5 mins orange anus can't seem to get over --- tell the truth - shame the donald

— Rosie (@Rosie)

Along with the "orange anus" remark, O'Donnell tweeted out a video of where their long standing feud began.

Though O'Donnell has been critical of Trump for years, the feud is generally thought to have begun in earnest when she dedicated a segment on The View (she was a co-host at the time) to a press conference Trump gave about the then Miss USA Tara Conner's drug and alcohol use in December 2006.

During the segment O'Donnell goes after Trump for his bankruptcies ,and for perpetuating the idea that he's a self-made man when in fact his money came from his father. She says Trump is no more than a  "snake-oil salesman on Little House on the Prairie".

“He annoys me on a multitude of levels,” she says. “He’s the moral authority! Left the first wife, had an affair, left the second wife, had an affair, had kids both times but he’s the moral compass for 20-year-olds in America. Donald, sit and spin, my friend."

Let's just say Trump didn't take too kindly to that.

He told told People Magazine O'Donnell was "a real loser" and "a woman out of control."

"You can't make false statements. Rosie will rue the words she said," he said about O'Donnell's claims about his bankruptcies. "I'll most likely sue her for making those false statements—and it'll be fun. Rosie's a loser. A real loser. I look forward to taking lots of money from my nice fat little Rosie."

And that was only the beginning.

When O'Donnell announced her engagement to then-girlfriend Michelle Rounds in December 2011, Trump tweeted the following:

I feel sorry for Rosie 's new partner in love whose parents are devastated at the thought of their daughter being with --a true loser.

— Donald J. Trump (@realDonaldTrump)

Rosie tweeted back, calling him an asshole, but Trump wasn't done yet.

- wow u r an ass http://t.co/aL3WQ0cL

in every way -

— Rosie (@Rosie)

Trump tweeted a video criticizing both O'Donnell's OWN network show Rosie and MSNBC's Lawrence O'Donnell saying, "It's really amazing. When I don't like somebody their shows do really badly."

Same last name, same bad ratings- and ..... http://t.co/KCVRNBJa

— Donald J. Trump (@realDonaldTrump)

As the years went by, the attacks kept coming.

When O'Donnell returned to The View in 2014 she told People Trump's incessant attacks were "the most bullying I ever experienced in my life, including as a child".

She added, "It was national, and it was sanctioned societally. Whether I deserved it is up to your own interpretation."

When O'Donnell left the show for the second time in February 2015, Trump just had to comment. "Well, it's very sad what's happened to The View and I predicted that with Rosie O'Donnell it would fail. I guess the prediction is correct, but, I mean she's a total train-wreck, so let's see what happens and I hope it works out well." And once again he said, "Rosie is a loser."

In August 2015, the feud made its way to the presidential campaign.

At the first Republican presidential primary debate, moderator Megyn Kelly asked Trump about his usage of terms like "fat pigs" and "disgusting animals" to describe women.

"Only Rosie O'Donnell," Trump said to the laughter of the crowd.

O'Donnell responded by tweeting, "try explaining that 2 ur kids."

try explaining that 2 ur kids

— Rosie (@Rosie)

Then, once again, at last night's debate, Trump felt the need to bring O'Donnell up. And once again, O'Donnell continued to call it like she sees it.

As well as calling him an orange anus, O'Donnell , "HE WILL NEVER BE PRESIDENT".