Contestant's unbelievable quiz show fail

A contestant on a Spanish quiz show has been mercilessly mocked online after getting a question wrong

Having to answer questions within a short time frame isn't always easy, as we have seen from a range of TV quiz shows.

For some reason even the simplest of questions seem nearly impossible to answer, even if the answer is right in front of you — or on you.

This was the case for Alberto, a contestant on Ahora Caigo a Spanish version of US game show Who's Still Standing?, who got a question wrong despite the answer being printed on his shirt.

Alberto was asked "What is Steve Rogers in the Avengers?" and given a choice of "doctor", "sir" or "captain".

Alberto was asked a question about Captain America and failed to realise that the answer was on his shirt. Photo / Antenna3

The contestant, who was wearing a Captain America T-shirt, appeared to have no clue and, to the disbelief of everyone watching, answered "doctor", news.com.au reported.

The blunder caused him to miss out on more than $150,000 in prize money.

Host Arturo Valls was quick to make a joke out of the situation saying: "We wear these shirts and we do not know what we are wearing!"

The clip has since been shared on social media, with people taking to Twitter to mock Alberto's "epic fail".

The show's host wasted no time in pointing out Alberto's embarrassing mistake. Photo / Antenna3 TV

"The worst thing is that he only had to look at his chest and have a basic level of English to get it right," one Spanish Twitter user commented.

Another said: "This guy is like the people who wear Nirvana and Ramones T-shirts just because they're in fashion!"

It wasn't all bad news for Alberto though, using his short TV appearance to propose to his girlfriend on the show.

He got down on one knee and popped the question to the camera, hoping that his girlfriend at home was watching.

Whether he had planned to propose all along or thought that the gesture might distract from his embarrassing slip-up, we may never know.