When the outcome is obvious.
The opposite of suspenful.
Predictable.
Johnny is going to wrestle a bear. This is going to be a real polish knuckle biter.
by Burt Macklin, FBI November 13, 2017
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To punch someone repeatedly or to fight.
1. I'm going to polish knuckles with that guy after class.

2. I want to polish knuckles on their face!
by Th3 mountain man September 14, 2020
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