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1.
Noun. When a girl has both a great personality and good set of tits.
My girlfriend has a nice pair of personalitits

Im in love with her personalitits
by pastaguy101 August 23, 2012
 
2.
When a set of boobs are so large or awesome or beautiful they deserve their own names or special treatment.
Ken: Wow Jens personalitits deserve a shot each those things are awesome
Matt: Just give them to Jen they share the same blood stream
by Ben&Jerry Suck February 19, 2011