Two fists coming together in friendship or solidarity, followed by a mimed explosion.
Variation the familiar knuckle bump, fist bump, or bro fist.
It is common to say the phrase "fist bump, fireworks" while enacting both parts of the bump bomb.
Dude #1: Dude, that was a sweet burn! Bump bomb?
Dude #2: I heard that.
Both Dudes (while bump-bombing): "Fist bump, fireworks."
by userbits August 11, 2010
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