Gooey Bomb

The Gooey Bomb is an explosive item that will appear in the upcoming game Super Smash Bros. Brawl as a weapon. It is mentioned that the Gooey Bomb is similar to the Motion-Sensor Bomb from Super Smash Bros. Melee, as, like the Motion Sensor Bomb, players can attach the Gooey Bomb to surrounding terrain; unlike the Motion-Sensor Bomb though, players can also attach the Gooey Bomb to opponents. Apparently, the only way to remove a Gooey Bomb once it has been affixed to a character is to have that character run into another opponent, causing the Gooey Bomb to stick to them instead.

Origin
The Gooey Bomb resembles an item from the odd series titled Cho Aniki. It turns out that one of the composers for the Cho Aniki series, Koji Hayama, is working on Super Smash Bros. Brawl. None of the games have ever been ported to the West, but the series title loosely translates to English as Super Big Brothers.

Trophy Information from Super Smash Bros. Brawl
''A bomb encased in a blob of goo. This material is highly adhesive, so you can throw it at and stick it to opponents. Once it's attached to someone, this nefarious device will explode after a set amount of time. Be wary, though--if you come into contact with the character carrying the bomb, it may stick to you. This truly is a high-risk item.''