Hint: Mic Effects
Say these words into the microphone on the mode select screen.
Say “Brighton” and Brighton waves.
Say "Fly Guy" and Fly Guys fly across the screen.
Say “Cheep Cheep” and Cheep Cheeps will fly out of the water.
Say “Goomba” and 2 goombas will run out.
Say “Twila” and Twila will hold her staff up to you.

Hint: Microphone Commands
These commands require the mic.
In Verbal Assult say "Bullet Bills" to fire bullet bills on your enemies.
In shoot your mouth off Say "0" to drop thwomps onto your opponent.
In Verbal Assault say "Goomba" or "Nuts" to get secret weapons.
In Verbal Assault Say "gears" to drop gears in front of your machine.
Say "Ukiki" to have the monkeys throw something at the other players.
Say "Pyro" to launch your flame throwers.