Press SHIFT + ~ or @ to display the console window. Enter sissy to enable cheat mode, then activate the following cheats by entering the corresponding codes. Repeat a code to disable its effect.

CHEAT FUNCTION - CHEAT CODE
God mode - alamode
All destructive weapons - packnheat
Extra ammunition for current weapons - payload
All weapons, maximum ammunition, invincibility - iamsolame
Extra doughnuts - piggytreats
Extra money - jewsforjesus
Extra dog treats - boyandhisdog
Extra catnip - iamtheone
Extra cats (for silencers) - lotsapussy
Extra health pipes - jones
All radar-related items - swimwithfishes
Rocket cameras - fireinyourhole
Body armor - blockmyass
Gimp suit - smackdatass
Police uniform - iamthelaw
Full health and 4 medkits - healthful
Gary Coleman NPC bystander pawns - whatchutalkinbout
Fanatic NPC bystander pawns - osama
Guns that use cat silencers now shoot cats - rockincats
Disable cat shooting guns - dokkincats
Toggle ghost mode; fly through walls and people and never take damage - ghost
Toggle flight mode [NOTE 2] - likeabirdy or fly
Disable flight and ghost modes - walk
Slow motion mode - slomo
Disable slow motion mode - slomo 1
Set errand complete, turns on hate player groups - exec function SetThisErrandComplete()
Set all of indicated day's errands complete, turns on hate player groups - function SetThisDaysErrandsComplete()
Set all of today's errands as complete, turns on hate player groups - SetTodaysErrandsComplete()
Reset all errands, make hate groups not hate anymore - SetAllErrandsUnComplete()
Set all errands complete, turns on hat player groups - SetAllErrandsComplete()
Set the day, all errands before that day completed - SetDay()
Set the day, reload level for that day - WarpToDay()
Map select - Goto()
Change player to opposite morality - ChangeDude()
Reset police and wanted status - ResetCops()
Play demo indefinitely - set gamestate demotime 9999
Toggle all non-player triggered animations and actions to stop - playersonly
Extra dog treats - boyandhisdog
Slow motion - slowmo <0 or 1>
One shot head kills [NOTE 1] - Headshots
Ricocheting cats when shot [NOTE 1] - BoppinCats
Disable ricocheting cats [NOTE 1] - SplodinCats
Scissors machine gun [NOTE 1] - NowWeDance
Everyone is Gary Coleman [NOTE 1] - Whatchutalkingabout

NOTE 1: This code requires the v1137 patch or higher version of the game.
NOTE 2: Look up and start moving forward to fly straight in the air. In flight mode you cannot crouch, jump, zoom (with hunting rifle), etc. If you go exit flight mode with the walk code at a large height you will take damage.

Complete the game to unlock the "Enhanced Mode" option, which allows powered-up weapons, a police uniform, napalm urination, and more items.

Go to the "Visitor's Bureau" between the Asylum and the Jail. Knock down one of the pieces of fence surrounding the building. Walk or jump onto it. Then, in the direction you would like to move, "kick" the ground. Kicking the ground (in that direction) moves the fence toward the area ahead of you. Since you are standing on it, you are also moving with it. This can be tough to do at first.

-Make friends with a dog by throwing some dog treats at him. Decapitate someone, then press Q to kick the head. The dog will play fetch with the head and bring it back to you.

-In some dark areas such as alleys, someone will sneak up behind you and demand all your money. Kick him then shoot him hum.

-If you use catnip on yourself, you will get you high and slow down the surroundings, while you are moving at normal speed.

The bong will give you 125 health points no matter what your health currently is. Be careful, as it will be addictive. If you do not smoke another one when the heart next to the health display gets very big and your character begins complaining, you will lose a large amount of health points.

If you use dog treats on yourself, you will gain 1 HP but hear your character vomit and cough.

On Tuesday the clipboard (one of the missions) will replace the empty hands.

Note: The "1337" patch is required. There is a tunnel hidden in some bushes behind your home. It leads to the Tora-Bora, a secret underground laboratory where fanatics designs the chemical weapons. After completing all levels, you will get the WMD. This is a rocket launcher that releases a powerful virus that will leave everyone crawling and coughing.

Note: The "1337" patch is required. There will be three, instead of two, expansion chips for the Bass Sniffers: the police chip, the gun chip, and the Chompy game. It is very difficult to find one of those chips. While playing Chompy, you will be given the position of all the people within the radius of the radar. Use W, A, S, and D to play the game for ten seconds. In Chompy, you will move a large red fish through the radar. You have to eat the other fishes. When you eat one, the person that is represented by the fish will be eaten by the icon. You are also invincible while playing Chompy. You may also experience a glitch where you will remain invincible if you are arrested while playing Chompy. You will stay invincible until you play Chompy again.

-Go to the Lucky Ganesh store and enter the "Employees only" room. You will find some wood fencing. Step on it and you will fall. Walk you and will see some indestructible dogs. They will not attack if you do not attack them. You will find a tunnel with a bazooka. When you fall down, go to the right to find some bombs.

To get the rocket-launcher on Tuesday, you must have catnip when you go to the church to confess your sins. When you get to the courtyard where there are five fanatics, use the catnip, quickly run up to the rocket fanatic, and kill him. As he is dying, he will drop the rocket launcher, and you should be able to pick it up when it is in mid-air.