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