Jason Derulo Goes to Rehab ... Addicted to Ass

7/21/2014 9:04 AM PDT
Jason Derulo checked into Rehab this weekend -- the legendary Las Vegas pool party at the Hard Rock -- where the singer had to follow a 12-step program of his own: 

Step 1 -- Admit you are powerless over ass.
Step 2 -- Embrace and enjoy. 
Steps 3 through 12 -- repeat Step 2. 

Get jazzy on that. 

Thanks to our friends at SpyOnVegas.com for the pics.