Type these cheat-codes in any menu you like. You will hear a sound when typed correctly. Type the cheat again to disable. Cheats are written to the registry, so the will be available next time you play the game.

IAMALAZYBASTARD - Debug Menu
WARPSPEEDMRSULU - Hyper Speed
WRECKEDONSPEED - Mega Speed
REFLECTIONS - Mirror Mode
GIVEMESCORPIO - Scorpio League
GIVEMETAURUS - Taurus League
JACKIMFLYING - High Gravity
FLYMETOTHEMOON - Medium Gravity
BRINGMEBACKTOEARTH - Restore Normal Gravity
TROTTERS - Expert Difficulty
BIGANDPINK - Hard Difficulty

BILLYTHEWHIZZ - Unknown
NETWORKFUN - Unknown
SNAR - Unknown