noun- person, place or thing.
a gurb could be anything (hoe, money,girl, boy,etc.)

stealing; or in a case of a burn or good comeback.
ownage.

Nearly retarded, special ed, slow,

A Gram of marijuana.

Shortened term for garbage

to gurb someone:
whilst getting off, (snogging) or even eating out, you grog in their mouth/hole.
basically, spit snot onto their tonsils.