Justin Biebercant be an international pop star all on his own.
Like, when Im by myself and I feel like I have nothing to lean on?
Terrible person, he says.

Credit: Jon Kopaloff/FilmMagic
So [my friend] went to take my picture, and I mooned him.
And I guess [the guards] thought that I was being disrespectful to the site or whatever.
Thats not what I was doing.
I wanted to smack [the guards] around a little bit, he recalls.
(Bieber previously demonstrated his penchant for showing his ass and stuff ina since-deleted Instagram postthis summer.)
But despite his hesitance to return to his wilder ways, Bieber doesnt necessarily regret about his past.
Its not just me, the 21-year-old says.
If I could go back, I wouldnt really change much.
I think its all my journey.
That stuff made me who I am.
Read more from Biebers cover story over atGQ.