a. A person, usually male, who is addicted to marijuana. 6. pothead
b. A person who has signed up for the website http;//www.whatthefuck.com under "Grasshead."
b. A person who has signed up for the website http;//www.whatthefuck.com under "Grasshead."
by Alan December 5, 2004

by Lmaogen August 2, 2016
