The Kamekameha is a mispronounced version of the Kamehameha used by Goten. When he uses the attack, it succeeds in creating an energy blast, much like the normal Kamehameha. The only difference, however, is that when it is released, it loses direction and goes anywhere. This is because Goten has not learned to control the direction of his energy attacks during his training with his brother Gohan. Another notable feature when it is used, is that it also creates an energy sphere around the user.
The Kamekameha was first used by Goten while facing against his best friend Trunks in the 25th World Tournament. After Trunks fires an energy blast of his own, Goten attempts to use the Kamehameha. However, when Trunks asks Goten if Gohan has been helping him direct ki blasts, Goten's Kamehameha loses direction, making it "Kamekameha." Trunks and the World Tournament announcer dodge the attack, which finally blasts a hole through the World Tournament waiting room.