Simon Cowell has to have comedians" jokes "explained" to him on "Britain's Got Talent".
Fellow judge David Walliams claims his friend "doesn't live in the real world" so doesn't understand a lot of the references used in gags by the comic auditionees, so panellist Amanda Holden has to help him out.
Speaking to the new issue of OK! magazine, David - who is also joined on the four person panel by Alesha Dixon - said: "Whenever we have a comedian on the show, I don't sit next to Simon but I can see Amanda explaining the jokes to him because he doesn't live in the real world. There was one comic who sang a song about a bag for life, and of course Simon's not been in a supermarket since 1982 so he has no idea you're supposed to have these plastic bags you reuse.
"He's probably the only person in Britain who doesn't know what a bag for life is - I bet even the queen knows what a bag for life is!"
The 46-year-old funnyman loves it when auditionees "drag" him up on stage - but isn't impressed if the acts get buzzed off stage when he's by their side.
He said: "I often get dragged up on stage which is quite fun - apart from one time I got dragged up on stage and the audience started booing me because they didn't like the act. I got buzzed off as well so I couldn't help taking it a bit personally."
David is excited about this year's show because he thinks the results will be unpredictable.
He said: "I don't think anyone can call [the winner]. No one really knows who might win. Sometimes there might be someone who is the favourite all along and you think it's a done deal and they'll definitely win but it doesn't feel like that this year."