Top definition
A person who is impersonating another person via Twitter.
Person A: Did you hear that Jeff was receiving tweets from his wife?

Person B: No, What did she tweet?

Person A: She was saying that the pool guy was better in bed than the gardener, but it was a Twitterpostor. His best friend created a twitter account under his wife's name and he was the one sending out those tweets

Person B: Aren't you his best friend?

Person A: Yup!
by Jalisciense June 03, 2009
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