You can enter any one of these while creating a license plate. Once finished inputting the code name make sure the okay button is highlighted first then press L1 + R1 + X.
HAWG Become a biker
JASS Become a blind, mado-sachoism, donkey smoking a cigarette
PHAM Become a butcher that is asian
M1K3 Become a commando
BRUZ Become a famous boxer
B00B Become a female punk
TFAN Become a gangster
TATS Become a lady who has a tatoo everywhere
MNKY Become a male punk
J1MM Become a nasty corpse
PIMP Become a pimp
P1MP Become a pimp
FATT Become a police officer in a higher position
5WAT Become a S.W.A.T. team member
B00Z Become a street bum
HARA Become a working asian
MRFU Become an asian that likes gambling
FUZZ Become Johnson the police officer
B1G1 Become your female boss
ROSA Become your partner
HURT_M3 Become your partner but wearing ligneire instead
non ti so garantire la correttezza, non ho neppure il gioco ... ma questi ho trovato ... buon divertimento !!!