Because homecoming came first, and there was the homecoming court. The five guys on homecoming court were disqualified from being in the prom court. So being prom king was being sixth most popular.
-- Andy Richter
   
Andy Richter   Name:
Andy Richter
Type:
Comedian
Nationality:
American
Birth:
October 28, 1966
https://www.nutquote.com/quote/Andy_Richter