Space Filler - a person who fills the empty space in your life. When someone doesn't want to be alone, but doesn't want a relationship, doesn't know many people in a new city or place, situation or group. Can be same sex or opposite sex. If opposite sex, the Space Filler can sometimes become a sex partner as well. Someone you hang out with, spend time with that you enjoy, but may not have a lot in common with or is someone you wouldn't seek out as friend or partner under normal circumstances. Someone of the opposite sex you ‘use’ to keep you from thinking about the person you really want to be with, but can’t for numerous reasons. A Space Filler eases the pain and loss of not being able to be with the person you want. Men more often than women use Space Fillers after a recent divorce or break up. They are also someone you would never want a real relationship with, hence they are filling the empty space until someone better comes along.

A (generally poor) joke made to a peron for the express purpose of talking to them.