Used to refer back to something or someone mentioned earlier. Mainly used in law in place of words such as aforementioned, though picked up by college-aged people in an attempt to sound smart. It is often used incorrectly to reference that which someone else has mentioned in a conversation.
Likely popularized and picked by many up from the Pirates of the Caribbean film trilogy.
Jack Sparrow: The rum is gone. Damnit.
Unmemorable character: Said alcohol is gone.