Derived from the word "sate" it could be interpreted as someone that wants to completely satisfy another person by means of their desire or appetite, etc.
or it means when your mate stops you from having sex with someoneexample;
person 1: did you do her?
person 2: ugh no some prick walked in and ruined the mood. frickin satist
it depends.. it's nothing positive. it's the unlucky #. even more its used on ritualistic animals as the number of the satist. often seen on a raging bulls forehead, or goats head.
Someone who enjoys giving pain is a sadist. Someone who enjoys receiving it is a masochist. I'm not sure if there is a special word for someone with both, or if they are simply sadistic and masochistic. Sadomasochist