IIRC it started with "4-pooling" which is when, as Zerg, you build a spawning pool while only having 4 workers (it's been years, forget what they're called), rebuild your 4th worker and then start making zerglings to achieve a super-early attack (a "rush").
Then your opponent calls you all sorts of vile names and questions your sexuality, etc.
That's only if you manage to get the first two zerglings out faster than it takes for opponent's SCVs to arrive at your base and kill your drones (that's the name of Zerg workers) :).