Top Definition
(Noun) One who displays a noticeable psychotic nature; a mentally ill, unstable, or deranged person who makes things up in their minds, feels pain that is not there, tells everyone about her private life especially when they do not care

Not to be used in conjunction with Negative Nancy or Debbie Downer
Did she just take a pregnancy test at work and leave it on the counter for everyone to see?

What a Psycho Sally!
#crazy #nutcase #psycho #deranged #insane
by Manic Mary June 08, 2010
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