Justin Bieber fanatics, should wewe 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) mashabiki rushing to me, it sometimes scares me." And with good reason- crazed mashabiki even caused a dangerous stampede at a mall where Justin was supposed to perform!Yikes!