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1.
Australian slang to describe a sportsperson of poor quality prone to making mistakes in the field of play. Can also defined to describe a "useless hack" or a "dud"

Originates from Essendon Aussie Rules player Aaron Henneman who is regarded as the worst player in the AFL Football League.

Commonly used derivative is "Hennohack"
Oh no! He's done a Henno!
by Maximus Fortitude December 13, 2005

Words related to Henno

dud hack hennohack the hen useless
 
2.
Cult greeting designed by The Fez!, Based upon the way Mike talks.
Henno, me maaaaam', can I have some more chicken nuggets and pepsi, you know what I'm saying?
by The Fez! December 07, 2004