The recent public spat between Donald Trump and Rosie O'Donnell is just the latest episode in a feud that goes back nearly 10 years.

Trump took a shot at O'Donnell Thursday night from the GOP presidential debate stage.

“You've called women you don't like fat pigs, dogs, slobs and disgusting animals ...” moderator Megyn Kelly started.

“Only Rosie O'Donnell,” Trump interrupted.

“For the record, it was well beyond Rosie O'Donnell,” Kelly responded.

On Twitter, O'Donnell gave a one-sentence response to her mention: “try explaining that 2 ur kids.”

The pair have been going at it since at least 2006, when O'Donnell, then a co-host on ABC's The View, criticized Trump for publicly chastising the reigning Miss USA for underage drinking.

“He annoys me on a multitude of levels,” O'Donnell said. “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.”

O'Donnell also questioned Trump's business acumen, pointing out that “he inherited a lot of money” and has “been bankrupt so many times.”

Trump threatened to sue O'Donnell, saying he looked forward “to taking lots of money from my nice fat little Rosie.”

When O'Donnell announced her engagement to Michelle Rounds in 2011 – the pair have since split – Trump congratulated the couple by calling O'Donnell “a true loser” on Twitter: “I feel sorry for Rosie's new partner in love whose parents are devastated at the thought of their daughter being with @Rosie – a true loser.”

“Wow,” O'Donnell replied, “u r an ass in every way.”