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Verb: to Derf is to purposfully send someone the wrong way, or to trick someone into going the wrong way. You have to strike it with such confidence and not to stutter that they do not second guess you and still believe they are going the right way. Even when they know they have gone the wrong way, they blame or doubt themselves.
This guy asked me for directions and I totally derfed him.
via giphy
by Joeseppe July 15, 2019
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