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A Rheeni is a self absorbed girl who thinks she is the only person that matters, A Rheeni will often blame others for her problems, then whine to her friends about how her life isn't perfect.

A Rheeni will never get anywhere in life until she takes responsibility for her actions.
Person 1: I wish Rheeni would grow the fuck up..

Person 2: Ha! I don't see that happening any time soon.
by fappingmushroom December 01, 2013