1) A 70-character message, which is half of Twitter's 140 character maximum.

2) A derogatory description of a Twitter user, particularly those that Twitter way too much.
1) Twitter lets me use 140 characters so then 70 character's a half-twit?

2) "Look at Annie just Twittering away. She's such a half-twit."
by PseudoIntellectual. April 26, 2009
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