http://orteil.dashnet.org/cookieclicker/ Fun game! Hold Ctrl+Shift+J to poen the consel and paste this in there and press Enter Game.RuinTheFun()!
We already have a thread about cookie clicker here: http://empireminecraft.com/threads/cookie-clicker.30162/ I don't think we really need a whole separate thread just for one cheat code
Game.RuinTheFun() gives you just under a quintillion cookies and every upgrade and every achievement.