WHEN YOU SMOKE HEMP  IT LEAVES A RESIDUE 
 TAR   INSIDE  THE  MACHINE,   WHICH   IS 
 EXTRACTABLE  WITH  THE HELP  OF A  METAL 
 ROD.  BE WARY HOWEVER, THAT THE HEMP TAR 
 IS  NOT  AS  VISCOUS AS YOU MAY THINK... 
 IT'LL QUICKLY  GET  ON YOUR  FINGERS AND 
 BOOBS... AND  IT'S HARD TO GET OFF. VERY 
    STICKY BUSINESS INDEED. MOST PEOPLE   
 JUST   GET   RID   OF   THEIR   MACHINES