Road Rash Cheats

During gameplay, type XYZZY to enable cheats.
YES, OCCIFER: Kill cop.
BRIBE: Kill cop.
SPOON!: Nitro.
THWACK!: Get chain.
K'THUNK!: Get club.
PLUGH: Disable cheats.

Also, in the options menu, type in 15S9 PUO3 (unconfirmed).