A rare phenomenon when a infatuated teenage girl that is also bipolar during the school year suddenly becomes calm, stable, and fun to hang around during the summer hours. This happens most often at small private schools meant to help with learning disorders.
Sam: Man, I hung out with Sophie today
Ben: You mean the super crazy bitch who won't leave Jake alone?
Sam: Yeah man, she was really chill today, must be going through Psycho Hibernation