Top Definition
One who updates one's status on Facebook, Twitter, or another social site, when in the midst of an extreme mood shift. (Most items posted in this way will be deleted a few minutes later, when the original poster is calm again)
Dave: Did you read Jill's status update? She sounds upset.

Joe: Nah, she's just having another mood swing. She's such a roller-poster.
by Rapunzel_Dambreaker March 31, 2011

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