Justin Bieber fanatics, should anda ever see the teen singer up close (hey, it could happen!), remember one thing: do not smother him! The 15-year old hearththrob is still getting used to the attention; plus, he's "really claustrophobic", meaning he's afraid of tight enclosed spaces. He explained, "Sometimes, if it's not really organized and there (are) peminat-peminat rushing to me, it sometimes scares me." And with good reason- crazed peminat-peminat even caused a dangerous stampede at a mall where Justin was supposed to perform!Yikes!