1. noun. -- A collective population of idiots; who share so much in common among themselves be it the specific notion or behaviors that it's undeniable they are working as a single unit.

Ex. The internet group "Politics 123" is undeniably an idiocity.

2. Adjective. -- The specific notions or behaviors commonly displayed within an idiocity.

Ex. Thinking uggs are cute with yoga pants is the idiocity of the incomming freshman class, they're clueless.