The horseback-like dancing from the video of South Korean rapper PSY’s song “Gangnam Style” has been imitated by the U.S. Naval Academy, the Oregon Duck mascot and wedding parties, among others.

Now, it’s taken over a Philippine prison.

More than 1,000 inmates from the Cebu Provincial Detention and Rehabilitation Center in Cebu, Philippines, re-created the dance in a massive prison courtyard:

The prison first rose to Internet fame in 2007 when its inmates danced to Michael Jackson’s “Thriller,” racking up more than 50 million YouTube views to date. According to Gawker, they’ve been performing for the public ever since, occasionally receiving allowances as a reward.

According to a 2008 New York Times report, dance routines were introduced into the prison as part of a broader program to stem outbursts of violence.

Dance “gives the inmates something to do, something they can be proud they’re part of,” one inmate told the Times. “It lets them know that they can be productive, that they aren’t useless scum of society. This is rehabilitation already.”

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