A question concerning Khloe Kardashian left the quizzers on Channel 5's Eggheads stumped.
The long-running game show has teams of contestants trying to beat a panel of professional quizzers in a test of their general knowledge.
The Eggheads were asked which member of the Kardashian family had been linked to basketball player Tristan Thompson.
Olav, Steve, Kevin and Lisa couldn't decide between Khloe or Kourtney as none of them keep up with the Kardashians.
Lisa admitted: "They're not my favourite. I don't keep close to them. It's between Khloe and Kourtney. I think they're dating more than one basketball player."
"I was just told the other day. Kourtney, I think, she’s seeing a basketball player but I think one or two of them are seeing basketball players," Steve said.
Eventually, they landed on the sister that's actually engaged to Blink-182 rocker Travis Barker.
"It should be obvious by now that we don’t actually know so we’re going to go with Kourtney Kardashian," Kevin said.
This made it the third time in recent weeks that the quizzers lost out to amateurs.
The amateurs this week won the £3,000 cash prize.
At the start of the show, the Eggheads had said they felt 'fantastic' and were 'ready' for a match.
Following the episode, Lisa took to Twitter to joke about getting the wrong Kardashian as her answer.
"Oopsy. After that show, Beth made me a useful primer on all things Kardashian. I call it my Karcrashian course," she tweeted.
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A viewer replied: "I have never shouted at the telly so much in my life. I thought that was the easiest question of the night but I do love reality TV."
A few were shocked at the number of losses the quizzes suffered from recently.
One user said: "That’s 3 wins in the new series now!"
"Embarrassing defeat for the Eggs with 4 v 1 and Kevin and Olaf in their starting line up," one posted, with Lisa responding: "They're all meant to be embarrassing. That's the point of the show. (Spoiler: I wasn't embarrassed)."
Another added: "A lot of challenger wins recently!"
Eggheads originally aired on BBC but moved to Channel 5 last year.
"The programme which I presented for more than 10 years, Eggheads, one of the greatest quizzes in the history of British TV, is moving to Channel 5 later this year," host Jeremy Vine said at the time.
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