Pop star Justin Bieber's private parts have been nicknamed 'Jerry' by his fans.

The 21-year-old felt violated earlier this month (Oct15) when photographs of him standing naked outside while on holiday in Bora Bora flooded the internet.

The full-frontal snap was captured without Justin's knowledge and once online, fans were quick to comment on his manhood - even giving it a name.

"The fans do. They call it Jerry," Justin laughed when asked by the Zach Sang & The Gang radio show if he had a moniker for his manhood.

The What Do You Mean? singer can joke about the incident now but initially he felt upset that his privacy had been disrespected. While he would rather the photos hadn't been taken, he doesn't think they were too "terrible".

"I still felt like I wanted to keep that part for me, You know?" he continued. "I was never- but I felt like it was a little bit of an invasion of privacy. And when I first found out about it, I was like... my heart sank."

Justin's dad Jeremy came under fire soon after the pictures came out for making a joke about his son's package on social media. Actress and singer Bette Midler even criticized him for saying how proud he was of his son's anatomy but Justin insists his father's comments helped him see the funny side of the situation after his initial disappointment.

"I thought it was hilarious, 'What do you feed that thing,' he said," Justin added. "It's such a dad thing to say. When I found out people were hating on him for saying that, I was like, 'Are you kidding me?' What dad wouldn't be proud of that? It's not like he's saying it to an 11-year-old. I'm 21 years old."