The “Beer Bad” episode
When “Buffy” was bad, it was really bad. And “Beer Bad” is one of the biggest turds Joss Whedon ever had the audacity to serve up to fans. The series was never particularly successful in addressing more commonplace issues, like bullying (“The Pack”) or underage drinking, but to turn those who participate in the practice into cavemen? F—ing cavemen. Because beer kills brain cells and causes evolutionary regression, or whatever?