A nickname for Borderline Personality Disorder (BPD), otherwise known as Emotionally Unstable Personality Disorder (EUPD), a
mental illness where a person
will experience extreme and fluctuating emotions. Similar to
bipolar, but with less clearly defined states.
Cried on the bus
home again. That's polypolar for ya.
I feel
alone despite having multiple friends. That's polypolar for ya.
My girlfriend left me because she thought I was
difficult. That's polypolar for ya.