Have you seen the video that has become the most popular video in YouTube.com history?

South Korean, Psy, was presented with a certificate by Guinness World Records bosses in London on Thursday for the achievement. 

Receiving the award, Psy says, "I'm honored. This is the first certificate I've ever had... I didn't get one at school." 

Guinness World Records Editor-in-Chief Craig Glenday says, "I think Psy looked touched to receive his certificate, he even asked if he could keep it! We're pleased to present his official certificate to such a global phenomenon." 

"Gangnam Style is an infectious, joyous song that has brought a smile to the faces of a tenth of the world's population, and the result is that it's the most liked video of any kind in the history of YouTube!"

Haven't seen it yet?  Here you go:)