DAVID Walliams ripped into his Britain's Got Talent co-star Simon Cowell in tonight's Comic Relief.
The children's author branded telly mogul Simon "the most untalented person" he's seen on the show during a tongue in cheek Q&A with kids.
He responded to a question: "Simon Cowell. He just sits there and says no to people! We could all do that - that's not a talent."
The pair are good pals really though, regularly trading playful insults behind the judges desk.
Hilariously, David was knocked down a peg when one child said he was their second favourite author, and they only wrote to him because JK Rowling was "too busy" to reply.
Davina McCall and Alesha Dixon hosted the annual fundraiser with special sketches from Dawn French, Jack Whitehall and the casts of Normal People and Fleabag.
Earlier this year David admitted he will miss his £1.5 million BGT pay cheque after the 2021 series of the show was cancelled.
The 49-year-old star did not try to hide his true feelings about the blow during an appearance on Lorraine.
The host asked: "There's no Britain's Got Talent, are you going to miss it? Are you going to miss your Simon?
David replied: "I'm going to miss the money!"
He chuckled, before adding: "I'm definitely going to miss the show, it's a shame but I understand the reasons.
"We can't do the show as usual, we need the audience.
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"It is a shame but we will be back bigger and better next year!"
In October, The Sun revealed that Amanda Holden and Alesha Dixon were unhappy after ITV sources told them that their male counterparts were on considerably larger pay deals - despite doing exactly the same job.
Amanda was on £700,000, Alesha £450,000, David pocketed £1.5 million, and Simon £2.5 million.
Head judge Simon was said to be unaware of the huge discrepancy and after the news broke.