I think of Justin Bieber, so I usually don't use the term.
i hate jb and the jonas.JACOB BLACK!!!! how can you think a girl like justin beiber be hot. that just wrong!!!!
Juicy Bacon! :D
JONAS BROTHERS 100%
JONAS BROTHERS!!!!! jb will always mean Jonas Brothers!!!! ALWAYS!!
Definatley Justin Bieber
ummm jacob black :) , or maybe justin beiber , but not the jonas bros, there not even hot
Justin Bieber :xxxx
Well it could be either of them, but JB stood for Jonas brothers first.JB really didn't stand for Jacob Black. Justin Bieber is just getting recognized as JB.