Justin Bieber has finally broken his silence over his now infamous back-seat smooch with "Baby" co-star Jasmine Villegas. In a preview of Barbara Walters' 10 Most Fascinating People of 2010 special, Baby Biebs explained the kiss heard 'round the world: "It just kind of happened and I don't know. It's not really weird. Is it weird? I think every 16-year-old kisses a girl, right, so that's not nothing out of the ordinary." "I was kissing her," Justin continued, "Well, I was just, I don't know, I was just kissing her. That's about it." While Justin admits that he and Jasmine V kissed, he insist...