person 1: i just took a gurb of some dank ass headies  person 2: hell yea i bet that was some crucial shit
a gravity bong or a hit from a gravity bong also known as a gb, grav, etc
"person 1: i just took a gurb of some dank ass headies  person 2: hell yea i bet that was some crucial shit" What is the definition of "gurb"?