An abbreviation for 'obvious,' popular with people of limited intelligence, generally of the 13-year-old girl variety. Often used to refer to things that are only obvious by virtue of the mindless monotony of the user's life.
something sorority girls say to sound cool, but in all actuality it makes them sound like pretentioushigh school sophomores
sorority girl - "im always willing to try something new"
guy - "in that case, stop by my house with a box of condoms"
sorority girl - "ok"
guy - "and bring a bottle of lube just in case"
sorority girl - "obvi"