Good Morning Britain
The presenter pressed the deputy PM on the Chris Pincher scandal.
The former Formula 1 boss managed to trigger the "WTF moment of the day" during his Good Morning Britain interview on Thursday.
“He’s a first-class person. What he’s doing is something he believed is the right thing he was doing for Russia."
"Next time I promise to spend at least five minutes on Thunderbirds."
The general secretary of the rail union appeared on the ITV breakfast show to discuss the strikes of railway workers this week.
The former BBC Breakfast host spoke out about incident in which he felt his daytime rival crossed a line.
Guest Quentin Letts clashed with the presenter over the UK's treatment of refugees, saying: "There's no point talking to you."
"Mr Raab, with respect, I know what you’re going to say."
As you'd expect, Piers has already fired back on Twitter.
Richard Madeley Clashed With Labour MP On GMB