Cavespeak for "having sex", "Do you want to have sex," "sex," or any reference to sex. (From "Caveman", the Ringo Starr / Dennis Quaid 1981 prehistoric comedy.)
Cavespeak has no grammar or sentencestructure (or written form). Therefore only uses of zug-zug are: "Zug-Zug?" "Zug-Zug." or "Zug-Zug!"
This is a phrase in Orcish that has come to be used in English phrasiology, much like the French 'C'est la vie.' Used originally by Orcs who had a tendancy to slip into their native tongue, having only learned English so that human players would understand them.
N. A stategy called out by members of the Orc race in Warcraft, which in English means "Produce, Produce!!!."
This stategy is implemented by creating 5 barracks and constantly producing 2-headed Ogres thus making it almost impossible to lose. An advanced use of this stategy involves attacking a rookie within the first 5 minutes of the game resulting in an emphatic "Holy Shit!!!!"