Shoulders which are not entirely covered by one's attire leading nearby religious zealots (especially Mormons) into sinful thoughts.
by Memefield July 13, 2014
When your significant other looks at sexy materials on the Internet, and you watch them looking at it and get turned on by association.
My bisexual girlfriend was looking for a girlfriend online all night, it was great Over-the-shoulder Porn!
by tomthealienninja June 7, 2010