From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Super Saiyan 4 Gogeta holds his hands back to his side in the Kamehameha stance. When he fires the attack, however, it releases confetti and streamers instead of a blue wave of energy.
Dragon Ball GT
Super Saiyan 4 Gogeta used this attack in his battle against Omega Shen Long. Super Saiyan 4 Gogeta duplicated himself into five beings and, while preparing the Bluff Kamehameha, they claimed it had enough power to finish off Omega. At first, Omega was shocked at this. When the five Gogetas fired the Bluff Kamehameha at Omega, however, it covered the Evil Dragon in confetti and streamers. While Super Saiyan 4 Gogeta laughed at this, Omega grew angry and continued the fight.
Bluff Kamehameha is named in Dragon Ball Z: Infinite World and is one of Gogeta's attacks in his Super Saiyan 4 form. Instead of inflicting damage on his opponent, it reduces their ki bars by four. If his opponent is doing a super attack Fusion when hit, it reduces their ki bars by six.
- The Bluff Kamehameha is one of two Kamehameha variations that do not inflict any damage (the other being the Chocolate Kamehameha).