The South Korean pop star's surprise hit has become the first YouTube video to surpass two billion views.
The unlikely viral star holds the record for most overall views and most views in a day with 38 million for his Gangnam Style follow-up, Gentleman.
No other video comes close to Gangnam on the streaming service's list of top videos.
Justin Bieber's Baby is the only other billion-plus video at 1.04 billion views. Psy has three of the top 15 videos on the site.