A Habitual user of Marijuana, usually to the point where it interferes with work, family, and school. Pot heads are known for their laid-back attitude, bad memory, encyclopedic knowledge of junkfood, and facination with shiny objects.
Pot heads should not be confused with occasional smokers who are still able to function and fulfill their responsibilities and obligations.
somebody who spends at least 75% of their money on pot, and have smoked so much, that they can't remember what day it is anymore. usually, a pothead doesn't do much but sit around with friends and blaze.. very rarely are they sober...