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