"Hobnocker" is a completely made up word from the nickelodeon show iCarly.

All of the previous definitions were written to Urban Dictionary AFTER the episode of iCarly with the meaningless word aired early 2009, all of the previous comments being a little bit later on.

The only description (from the episode of iCarly) is "gross... and illegal"
"You hobnocker!"

---------------From iCarly---------------
Carly: "Whats a hobnocker?"
Sam: whispers
Carly: "Eww, thats gross!"
Sam: "And illegal"
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a person who slaps people with his penis
that hobnocker over there just slapt me with his dick
by thehobnocker November 9, 2009
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A hobnocker is someone that does something illegal and gross (not to be confused with "hobnobber," which is a cool and awesome geek).
A hobnocker is someone that is addicted to illegal drugs.
A hobnocker is an alcoholic.
A hobnocker is a derogatory term describing a lowlife and pervert.

A hobnocker is a person who goes around slapping people with their genitalia.
That hobnocker should be arrested !
by offtheheasyjm March 4, 2010
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Someone who runs around knocking on people’s doors and flashing them when they answer.
Dude 1: Hello?
Hobnocker: hey ;)
Dude 1: Ew, you hobnocker!
by NipFace May 31, 2020
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a gross and a illegal person which is a hobnocker
Billy is a hobnocker
by Random85 May 26, 2014
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an animal that has sex with a human
that monkey over there is a hobnocker
by rowdyroxy December 6, 2009
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