Dallas couple shock parents with pregnancy announcement based on Jimmy Fallon's 'Whisper Challenge'

Alexa Goolsby shared video of her parents' reactions online

Alexa Goolsby played 'The Whisper Challenge' with her parents to announce her pregnancy (Alexa Goolsby/YouTube)

A couple decided to surprise their family by giving them news of their first pregnancy with a difference, because they couldn't actually hear what they were saying.

Alexa Goolsby shared the video online of her parents, Robert and Sharla Anderson, reacting in a completely unexpected way to a game inspired by TV host Jimmy Fallon.

They decided to play "The Whisper Challenge" after seeing it demonstrated on The Tonight Show, which involves giving guests sound-proof headphones and seeing how well they can lip-read names and other information.

In the video, Ms Goolsby's mum seems to get the point of the announcement straight away, removing her headphones - but the truth takes a little longer to sink in for her father.

He makes several hilarious, and adorable, bad guesses before repeating the words, "I am going to be a grandfather", and even then it doesn't really register.

But the moment that he realises what his daughter has said, he jumps up, removes the headphones and runs around the table to give her a hug.

Ms Goolsby, 27, told BuzzFeed News that sharing news of her pregnancy was even more emotional, because doctors had told her she would find it difficult to conceive.

“We are a very close family and we have grown up our entire lives having family game days,” she said.

“We really wanted to tell them in a special way especially since this would be their first grandchild.”

She is now expecting her first baby in May.

“The results were better than we expected and it is definitely something we will remember for the rest of our lives,” she added.