More commonly known as BPS. This is a condition common in teens and college age persons in which one is perpetually unsatisfied by a given party, get-together, hoedown, blowout, rage, and/or shindig regardless of the actual quality of said event. This results in an inexplicable and insatiable desire to search for a superior party, thereby insulting the hosts and annoying all of their friends.
Better Party Syndrome definition by Urban Dictionary