A small group of friends, always bang on the ganja. Poppin' toots, smoking bare bud and getting lean as beans.
Person 1: Can you smell that?
Person 2: Smell's like bud..
Person 1: Yeah you know!
Person 2: Ahhh, that would be why, the lean heads are over there.
Person 1: I wish I was as cool as them.
A Zipper-Head is one who still believes that the earth in the center of the Universe and that Humans never evolved as Science has proven.
Zipper-Heads are everwhere and they may not even realize they are one, but they are...and shall ever be one until E.T. takes a cosmic shit on there freshly manicured lawn.