Justin Bieber — 13-Year-Olds Can Handle F-Words March 23, 2012 - by Celebrity News Wire - Leave a Comment Justin Bieber insists … 13-year-olds nowadays can handle a few F-words — which is why it doesn’t make sense to give the new “Bully” movie an R-rating … especially when young teens can benefit from the message behind the film.Bieber called in to…