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1.
Originating from Paul Mezack, who invented the internet, met the anti-christ in virtual reality, was a member of the Philadelphia project, and knows everything about everything. Also the guy who has caused various planes to fall out of the sky whenever he is around.
New Guy: I invented the space program
and I have seen every single website known to man.
Jerry: Quit being such a Mezack
by Viking 2335 April 01, 2005
 
2.
Being a completely and utterly clueless person walking around without a care in the world . One who is can not cope or lacks the ability to correctly communicate with the other members of the human species.
If you know someone who fits this description he/she is being what I would call mezack!!!!
by Russ Webb September 29, 2005