In Age of Empires: Age of Kings/The Conquerors this was called/known as taunting. You could either do this by pre-defined voice taunts ("Start the game already!

In Age of Empires: Age of Kings/The Conquerors this was called/known as taunting. You could either do this by pre-defined voice taunts ("Start the game already!") or in the pre-game chat and during the game.