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a knob shiner is a blow job
i'm getting a knob shiner this weekend from a total hottie
by air-e-anna April 13, 2007
Coupling of words used to insult and enrage a fellow by suggesting he "shines knobs"
More offensive than the word "wanker" as it suggests that the victim of conversation pummels penis so vibrantly, that the offending love lance develops a shiny, glossy sheen.

often abbreviated to "Shiner"
Steve: "I think that the band Limp Bizkit are super awesome"

Dave: "Shut up you knob shiner"
by Ali August 29, 2004