This is what I know and if you don't know the meaning of one just ask! Also if you have one to add plz do!
Belieber, Uberbelieber, biebette, bieberholic, bieberstruck, bieberfy, bieber bully, WTG, OMB, Bieble, Bieber blast. Thats all I can remember off the top of my head right now!