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To be proven incorrect through the personal effort, dedication, and perseverance of another.

This term is typically used as a criticism against those who had little to no confidence in the abilities of a person after said person has accomplished a difficult challenge that they were assumed incapable of completing.
When Naked Craig historically defeated Manus on #DeathDays he thoroughly vankooten'd everyone who thought he would continue to fail with his current equipment.
by Machai May 22, 2017
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