to just sit and chill around. vegging can be done with more then one person, or done solo. Refers to the proud broccili (which is rich in Vitimans, its a miracle!) who does not do much in its life, but is still ultimatly cool.
to vegg, veggin', vegitate, veg (n) a person who chronically vegges.
YOU: nm, just veggin'
BOB: wow, you're such a vegg. i could come over and we could do some vegging together!
YOU: sounds VEGTASTIC!
does not refer to crippled person(s) at all. that would just be uncool.