Kid Klown in Krazy Chase 

Level Skip 
At the title screen, hold down L button with controller 2, then press and hold R 
button. Without letting go, take controller 1 and press and hold L button, then 
R button. Now without letting any of the buttons go, get a friend to enter any 
following code on both controllers simultaneously: 
Level 2 - A buttons; Level 3 - B buttons; Level 4 - X buttons; Level 5 - Y 
buttons.