(1) misspelling or misabbreviating a word;
(2) using the wrong word ("there" instead of "their"); or
(3) having no fucking idea how to use an apostrophe.
4. insulting people with disabilities who actually have enough sense to know when they can't spell a word, and so they wouldn't flaunt their ignorance the way an urbtard would.
normalchild: It's difficult to understand you when you talk like that, you urbtard.
jake32tardo: rofl lmao!!! ur 2 funni!
normalchild: STOP IT!
Fred: "Dude....stop it...you're an urbtard."