Justin Bieber Says He Has 'No Clue' Why Girls Scream At Him

'It's pretty hard to comprehend,' singer tells Oprah.

In less than a year, Justin Bieber has gone from Internet sensation to full-blown pop star. And, the 16-year-old stopped by "The Oprah Winfrey Show" on Tuesday (May 11) to admit that he's still trying to comprehend his fame and success.

"It's been pretty crazy coming from a little town in Canada and now being able to travel the world and do what I love," he told Oprah. "I was just posting videos online for fun. I never really thought this was possible, so I never really dreamed of it."

"He's got such a great team of people around him," his mom, Pattie, said on the show. "[They] protect his character and treat him like a kid and make sure that he stays grounded and has fun. I think I would worry more if he was in high school where I wouldn't know what he was doing, whereas now I know who he's with and where he is all the time."

Bieber, who is currently filming a video for "Somebody to Love," is quick to add that the people in his entourage are a tight-knit set and that he's careful about who is added to that group. "We're really skeptical who we let on our team. We've grown to be kind of like a family. It's been incredible," he explained.

To ensure that he isn't too inundated by the trappings of his new superstardom, Bieber takes off one day a week to be a normal kid.

"We try to take off at least one day a week for me to be a regular kid, go play basketball, hang out with my friends and, you know, just do what I like to do," he explained. "Sometimes for that day I just sleep all day because the six days before I'm exhausted."

And while he usually spends his off days doing more "normal" things like basketball, sometimes he also gets the normal treatment when his mom grounds him.

"My mom takes things that I really like, like my computer, my phone. She takes my phone away for a couple of days and I'm like, 'Oh, I need that!' " he said, adding there's no way he could get out of it by saying that he's Justin Bieber. He added, "She'll slap me in the face!"

But, unlike most teen boys, they don't have screaming girls following them everywhere they go. "It's pretty hard to comprehend. Like everything's just kind of surreal," he said, adding "I have no clue!" why they scream at him.