Kamehameha (亀破波, かめはめは), one of the signature move that define in Dragonball series. I recalled countless time doing that action in residing the phase "Kamehameha" and hoping that somehow someway that a ball of Ki will appear hitting everything I desire it to hit.
Too bad during my time, there are no toy that does that. However the kids are much more lucky now to get to have a wrist band that can simulate the action with light and sound.
All you need to do by wearing it, you follow the action and Goku will sound the Kamehameha with a flash of light pointing at that direction.
Here's the commercial of the toy. Apparently it seem like it can do even the charge function and give out vibration when you release the Kamehameha. COOL!!
This gadget is from the new Dragonball Kai series. Here's a Dragonball Tuesday for you. Kamehameha!