Enter the following for your license plate when starting a new game.

Cheat code:   Effect:
B00Z          Bum
5WAT          SWAT member
M1K3          Commando
FATT          High ranking police officer
FUZZ          Officer Johnson
B1G1          Your female boss
ROSA          Your partner
HURT_M3       Your partner in lingerie
TFAN          Gangster
HARA          Asian worker
MRFU          Asian highroller
PHAM          Asian butcher
TATS          Tattoo lady
MNKY          Street punk
B00B          Punk girl
P1MP          Pimp
BRUZ          Champion boxer
HAWG          Big biker
JASS          Blindfolded smoking donkey
1MM           Corpse
JASS          Blindfolded donkey smoking a cigarette
RECKON        Wild west gunslinger
ACTVZZL       Snoop Dogg
vaklam        Play as Jeanette
KNOICHI       Unmasked Ninja Women