Definitions by The Bradinater

zerg rush 

A quick attack that comes from the game Starcraft. The race Zerg makes units quickly, so a "Zerg Rush" is a quick, weak attack, or an underhand technique. Also an interjection.
Its not only used in SC, but other games and just a random computer thing to yell.

Player A: Well crap, a zerg rush!
Player B: =D

Person A: ZERG RUSH LOL!

zerg rush by The Bradinater August 12, 2006