Mario Party 6 Cheat Codes for Gamecube

Super stomp
When you get the rare mini game Dunk Bros. and you`re
opponent is about to score, jump on them to get the ball back
submitted by: jeff

See Butt-cheddar-BOB-Steve
At the mode select menu, say "Butt cheddar bob steve" and Butt-cheddar-BOB-Steve will jump out of the lake and moon the crap out of you. His butt is fuzzy.
submitted by: Billy Henson

Watch Mario pee on Luigi
At the mode select screen, say "Mario pee Luigi" and you will see Mario jump out and pull Luigi out of the lake and pee on him.
submitted by: Joe Talooska

How to play as Mickey Mouse
press aaa bbbb zzz really really fast.After unlock everything there is.Then beat any place there is with all the players set to hard.Then there will be a pop up that says you can now play as Mickey Mouse.
submitted by: ?

Extra Weapon
In the mini-game, Verbal Assult, say "Bullet Bills" to use bullet bills on your enemies.

Unlock thingss
Block Star Land on rare mini game space at the end of solo mode board
Block Star-2 player - Buy at star bank for 50 stars
Boo Taunt - Buy for 10 stars at star bank
Brutal Computer Rating - Buy for 30 stars in star bank
Change the Mini-game Bus' Design - Buy it for 30 Stars at the Star Bank
Character Sound Test - Buy for 30 stars in star bank
Clockwork Castle Board - Get 100 stars in the star bank.
Daisy Taunt - Buy for 10 stars at star bank
Dunk Bros. - Land on rare mini game space at end of solo mode board
Harder Computer Rating - Buy for 30 stars in star bank
Koopa Kid Taunt - Buy for 10 stars at star bank
Lab Brats - Land on the rare mini game space at end of solo mode board
Luigi Taunt - Buy for 10 stars at star bank
Magma Flow - Buy for 50 stars at star bank
Mario Taunt - Buy for 10 stars at star bank
Mini Game Mode Sound Test - Buy for 30 stars in star bank
Mini Game Secrets - get 20 stars and buy each in star bank
Miracle Book - Buy for 10 stars in star bank
Miracle Book Secret - Buy for 10 stars at star bank
Miracle book-page 12-16 - Buy for 30 stars each at star bank
Miracle Book-pages 17-20 - Buy for 40 stars each at star bank
Miracle Book-pages 2-6 - Buy for 10 stars each at star bank
Miracle Book-pages 7-11 - Buy for 20 stars each at star bank
Party Mode Sound Test - Buy for 30 stars in star bank
Peach Taunt - Buy for 10 stars at star bank
Seer Tower - Get 50 stars and buy in star bank
Solo Mode Sound Test - Buy for 30 stars in star bank
Toad Taunt - Buy for 10 stars at star bank
Toadette - Get 30 stars in the Star Bank.
Variety Sound Test - Buy for 30 stars in star bank
Waluigi Taunt - Buy for 10 stars at star bank
Wario Taunt - Buy for 10 stars at star bank
Yoshi Taunt - Buy for 10 stars at star bank

Play as Toadette:
Put 30 Stars in the Star Bank.

Clockwork Castle board:
Put 100 Stars at the Star Bank.

Shut Your Mouth: Drop blocks:
Say "Zero" to drop blocks on enemies.

Gamecube appearance:
In the orb hut (the tree place), when you buy things you can see a Nintendo Gamecube.

Backwards pages:
In the opening sequence, when the pages in the book turn, they will turn backwards. Note: This will also happen in the Book Of Knowledge.