Watch Out Justin Timberlake! Video of Dancing Grandpa Goes Viral

A dancing grandpa has become an internet sensation after footage of him strutting his stuff at a party was posted online.

In the two-minute video the elderly man throws away his crutches before cutting some impressive moves to Bill Haley's hit Rock Around the Clock.

The crowd claps and cheers him on as he gives younger partygoers a run for their money.

Although it is not known where the party took place, the clip was uploaded onto Facebook by Edgard Eleuterio Daza who captioned it: "Eternamente joven", which means forever young in Spanish.

Social media users have since flocked online to comment on the unidentified man's blissful dancing.

"I want him for my next party! God bless him. He's like Einstein after discover (sic) the physics equation," one viewer said.

Another wrote: "This is all so wonderful and funny! The girl filming him is saying aww I love him, many times.. He must be very loved by all the family. Then the mom tells her, that is how they used to dance."

A third commentator added: "I want to be this guy when I grow up!!"

The feel-good clip has already been shared almost a million times on Facebook.