Piers Morgan hit back at comedian James Acaster in a brutal swipe during Monday's Good Morning Britain.
James Acaster made headlines recently after the comedy star told Lorraine Kelly to "go f*** yourself" after she named Piers her 'hero of 2020'.
Morgan, who never holds back when it comes to his fiery rants, branded Acaster a 'pasty weasel'.
After the show played the clip of James, Piers said: "I don't know who that little pasty weasel is.
"James what? James Acaster."
"Apparently he's a comedian. I thought comedians were supposed to be funny...", he added.
Susanna Reid shot to Acaster's defence as she said she thought he was funny. She remarked: "I was actually watching some of his standup last night."
The television presenter replied: "You watched a man swear at Lorraine Kelly... and that made you go online to see more?"
Piers' rant comes after Lorraine claimed he was her 'hero' of 2020 during The Last Leg of the Year.
When asked during the TV segment, Lorraine said: "Stay with me on this one... Piers Morgan."
Acaster quickly remarked "go f*** yourself", which left everyone in the studio in fits of laughter.
But Kelly continued to defend her choice, as she said: "Stay with me, I understand, I appreciate the sentiment and don't look at me like that."
She insisted: "Do you remember when Boris Johnson hid in a fridge rather than be interviewed by Piers Morgan?
"None of the Cabinet Ministers would come on the telly because they were too scared and they all phoned up like ‘do you remember us? Can we come back on the telly?
"And they came back on the telly but it would’ve been better if they didn’t."
Acaster wasn't convinced as he said: "You don’t get to stop being a villain for two seconds and now you're a hero.”
Co-host Alex Brooker said while laughing: "Nothing sums up 2020 more than the nation’s sweetheart being told to go f*** herself."
Good Morning Britain airs weekdays at 6am on ITV.