The act of striping a nerd (social or otherwise) of their status as a nerd, in respects such as appearance, behavior, and in really successful cases, of their nerdish beliefs.
This dude used to wear the same too short pants and too small
hoodie every day. then all of a sudden, the next school year, he went skater. SO MUCH BETTER LOOKING, he was... DENERDIFIED(de=reversed, nerd=geek,fied=um. something.)