When you rage your cookies and get double the amount you origionally had in your jar, explained further at www.cookienexus.webs.com/commands.htm under rage section.
<newbie> Oh yah, time to rage my 1m cookies.
<CookieBot> newbie has ate their rage cookie and doubled the amount of cookies he had!
<CookieBot> newbie now has 2 cookies
<newbie> fml forgot to withdraw from bank