1 definition by Kmstl123

Top Definition
One who sits around the corner from their ex's house waiting for them to get home from a hot new date. When they arrive the psycho-sitter then makes his/her way to the new date and proceeds to punch them in the face knocking one or more teeth loose.
Bobby was attacked by the psycho-sitter last Wednesday.
by Kmstl123 October 28, 2005

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