What is Zom-zom?
1.
From a Gary Numan song, a fictitious restaurant.
Come to zom-zom's a place to eat like it was built in one day.
2.
A crudely formed paper cone used to hold tobacco spittle while masturbating during a nicotine enhanced euphoria.
i.e.: Fuck! my zom zom leaked into my urethra!
See 
Random Words:
1. 
(Somewhat archaic) chatspeak for "grin," deriving, AFAIK, from IRC.
See *g*, which is more common nowadays, especially on AIM..