Top Definition
A complete message written over AIM to a person you know is away from their computer. When that person comes back the message "explodes" in their face, like a time bomb.
Dude: I broke up with Amanda via AIM last night
Other Dude: Musta taken you hours huh.
Dude: Nah, bypassed that crap and left her a big AIM bomb when I saw her go away.
by Ontario88 December 15, 2006

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