Instructions
Dodge King Hippo's punches by pressing left or right on the directional pad. Wait for him to shake back and forth and then raise his fist over his head while opening his mouth.
Punch him in the mouth by holding up on the directional pad and pressing the punch button. King Hippo's shorts will drop and he will stop attacking to pull up his shorts.
Punch him in the belly button until he covers it with his fists.
Repeat until he's down for the count.