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