Pop star Justin Bieber, who recently broke up with girlfriend Selena Gomez, posted a photo of his bare butt cheeks on Instagram Saturday.

According to Bieber’s long-time manager, Scooter Braun, the cheeky incident was just a prank.

“As a prankster u have to respect another good prank. only makes sense. #crackdealer,” Braun tweeted.

“Haha,” Bieber tweeted in response.

Zap2It reports that that photo was quickly removed, but not before it was liked by about 86,000 Bieber believers.

Bieber isn’t the only celebrity who enjoys tweeting scandalous photos to his or her fans. Megastar Rihanna, in fact, is a prolific tweeter of “revealing” photos. Hollywood Life has even created a gallery of Rihanna’s “sexiest” photos.

While we may never know exactly why Bieber felt compelled to tweet a photo of his naked rear to fans, we can be positive that the incident wasn’t a wardrobe malfunction.

This comes as Bieber was photographed holding a blunt at a party inside a Newport Beach hotel room shortly after the New Year. TMZ obtained photos of the singer holding a blunt and partying with best bud Lil Twist.

In the meantime, Bieber’s mom is promoting “Crescendo,” an upcoming anti-abortion short film, according to The Associated Press. Pattie Mallette, who is an executive producer on the film, hopes to raise $10 million for pregnancy centers at screenings worldwide beginning February 28. The production company Movie to Movement told The AP Friday that Mallette will appear at some of the screenings.

The film will “encourage young women all over the world, just like me, to let them know that there is a place to go, people who will take care of you and a safe home to live in if you are pregnant and think you have nowhere else to turn,” Bieber’s mom said in a statement obtained by The AP.

According to TheCelebrityCafe.com, Bieber is also hard at work himself. The “boyfriend” singer is promoting his new “Believe” acoustic album on Twitter, calling it “some of the most hones music [he has] ever written.”

“Writing my heart out,” he tweeted along with a photo of a piano.

According to Disney Dreaming, Bieber’s new album is arriving in stores and online January 29. The album reportedly includes acoustic versions of songs previously released by Bieber as well as three brand new tracks.

Why did Bieber moon his fans? Is Bieber just being Bieber or is he simply trying to tell people to stay out of his business? Sound off in the comments section.