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1.
A person who's life revolves around Disneyland, and all things Disney related.
Jessica and her friends are only interested in watching Disney movies, playing Disney related games or going to Disneyland. They're more than just dorks or geeks, they're D-tards!!!!
by Brockly September 11, 2012
 
2.
Doubly Retarded
-or-

A combonation of "Dee-dee-dee" and Retard

Also be spelled as Deetard
~Random game character doesn't do what you want it to do~

You: ...D-tard
by Jorrell Cleave February 15, 2008