Soon-to-be Granddad’s hilarious secret happy dance

Imagine being able to capture the true reaction of your mum and dad after finding out they were going to be grandparents.

Well that’s exactly what Justin Hall did to his in-laws, setting up a hidden camera in a room adorned with baby paraphernalia and sending them in to discover their baby news.

Not unexpectedly, Grandma-to-be screams with joy once the penny drops, while Granddad plays it cool.

But when his wife leaves the room, he breaks into a hilarious happy dance!

The video was uploaded in 2013 but has recently gone viral.

Get ready to smile – you might just be tempted to do the same to your parents!