The kamikaze glitch is a glitch in Super Smash Bros. Melee that can be performed with Mr. Game & Watch and Ness. Use Mr. Game & Watch to absorb three of Ness's fully charged PK Flash attacks with Oil Panic. Then, have Ness (or any other character) put up their shield. Once the player unloads Mr. Game & Watch's bucket onto this player's shield, he will fly across the screen with blinding speed, instantly KOing any opponent in his path as the residual hitbox from the oil strikes opponents he passes by. This can also be done with Samus's Charge Shot, Mewtwo's Shadow Ball, or with a fully charged Super Scope, but with decreased efficiency.
If this is done near a wall, Mr. Game & Watch will stop at the wall and ride out the rest of the momentum of his attack. If the player jumps over the wall before the momentum disappears, Mr. Game & Watch will continue over the wall, despite the fact that he came to a complete stop.
In Brawl, this will not work because the damage output of Oil Panic was capped at 60%. As a result, Mr. Game & Watch will only get pushed a moderate distance. However, when an attack is hacked to deal ridiculously high knockback (such as Ganondorf's Warlock Punch in Brawl Minus), and connects with an opposing shield, the user will be sent flying back at incredible speeds, similar to the kamikaze glitch. This shows that the kamikaze glitch is not actually a glitch, but rather an extreme exploitation of the game's physics (specifically the power of a shielded attack determining how far the character is pushed back). It can therefore be expected that hacking to increase the max damage would result in the return of the glitch.