Credit: Steve Granitz/Getty Images.

Considering the fact that many of Justin Bieber's fans aren't yet legal, this story is kind of disturbing. During a radio interview in London this week, Bieber discussed the fact that his Beliebers have given his naughty bits a nickname: "Jerry."

While appearing on the UK's Capital FM, Bieber agreed to answer fans' questions on Twitter.  The deejay mentioned that when he'd asked for questions the previous night, someone said to ask Justin how "Jerry" is enjoying London.  When the deejay responded, "Who is Jerry?" the phrase began trending on Twitter worldwide.  Then, the deejay found out that "Jerry" is the fans' nickname for "Little Bieber."

"My fans are a little inappropriate," Bieber responded when the deejay related the story.  When the deejay asked if it was embarrassing for Justin, he replied, "It's funny.  I mean, I dunno, my fans are kinda inappropriate, but it's funny."  When asked why his nether regions are called "Jerry," Bieber replied, "I dunno, that's just what they named it … it just seems, kind of like, 'Here's Jerry.'"

Bieber joked about it later on Twitter, writing, "alot of jerry talk today. haha. my fans are wild."