This term, also described as /me *munch* *munch* (on irc), is used to describe the necessity to MUNCH on JUNK FOOD after a satisfactory ganja session.
02:13 * moanie has joined #keke
02:13 <moanie> keke
02:13 * moanie munch munch
02:13 * moanie has left #keke
02:13 <omfg> fred, i believe she's a little *munch munch if you know what i mean.