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A conversation simulated in your head. Usually never happens in real life, is had for hypothetical purposes.

Headconvos present the opportunity for you to decide someone else's responses.
Guy #1: So what time do you want picking up tomorrow?
Guy #2: What for, are we going somewhere?
Guy #1: Yeah to th- wait, I asked you about it in a headconvo. Uh... You wanna go to the game tomorrow?
Guy #2: Um... Sure...?
by Nottel Inyu April 25, 2010
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