Top Definition
A twit (i.e. twitter user) who tweets inappropriate sexual innuendo @minors. Also known as a #twitterphile or #twitterjohn.
Two reasonable people, out to lunch:
Person A -- Did you see that #twittersex Alan was creeping on that 14-year old?
Person B -- Yeah, he's such a #twitterast
by Burn Your Ships March 25, 2011
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