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A canadian or french-canadian that masturbates in public. Kind of like a canadian hob knocker
George: Why do you call him a Hab Knocker ?
Joe: Because we caught him masturbating on the other side of a stand when we were at the mall.
George: ...
by LAXVIP May 18, 2011
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A habknocker is a canadian, man or woman, who masturbates in public.
Hey George, I had a great time habknocking in the mall.

Man, that kid is a habknocker. I saw him jacking off in the public bathroom
by NJ kid June 02, 2011
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