Top Definition
An avid or obsessive follower of the TV show "Veronica Mars." Even after cancellation, they still participate on forums and write fan-fiction.
Tim: "Are you STILL watching Veronica Mars?"

Tina: "Duhh, it's the greatest show ever made!"

Tim: "God, you're such a Mars-Manic..."
by marsmanicgirl1122 April 02, 2011
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