Love Island fans could not believe their eyes on Saturday's instalment of Unseen Bits.
Welsh hunk Liam Reardon was playing a game of Mr and Mrs with Millie Court against Toby Aromolaran and Chloe Burrows.
And while the couple were recently chosen by the public as one of the most intelligent couples in the villa, they may have just lost their title.
Millie revealed during the episode that she thought Madrid was a country, while Liam also confessed he did not know what "sibling" meant.
Meanwhile, Faye asked later on in the episode if being a doctor had anything to do with science.
It was not the best week for some of the islanders.
Liam and Millie were playing a Mr and Mrs game, with Toby installed as quizmaster.
"What's their sibling' names?" asked Toby, during the Mr and Mrs game.
"Esme!" replied Liam, triumphantly.
"It's siblings! That's my mum," scoffed Millie.
"That's a sibling, isn't it?" asked a confused Liam. "What? Siblings is your family!"
"What's a sibling?" he demanded.
Chuckling, Toby replied: "It's your brothers and sisters, bro!" as the other islanders descended into giggles.
And those on social media who tuned in were not going to let them away with it.
One viewer tweeted: "I will never forgive y’all for choosing Millie and Liam for one of the most intelligent couples".
Another wrote: "millie and Liam were voted smartest couple... does Liam know what a sibling even is?"
"Liam asking what’s a sibling has honestly been the highlight of my day," giggled another.
"Y’all liam thought a sibling is just any family member. Pls rescue me from this show," added a fourth.
Liam guessed Millie's sisters' names wrong in the game, they are actually called Jessie and Loren.
