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Used to describe an Otaku that doesn't shower, stinks, and is probably an obese and utter disgusting grease ball, which is about 99.9% of them.
Lexi: My Brother's an Otaku that sits in his room all day watching anime and role playing on Kik, he never showers and stinks really bad.

Marshall: Otaku? More like Ewtaku.

Lexi: I overheard my parents talking about how disappointed they are in him.

Marshall: I don't blame them, I'd be sad too if my children were Ewtaku's.
by Sepheo July 18, 2016
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