dev·il's advocate
n.
One who argues against a cause or position, not as a committed opponent but simply for the sake of argument or to determine the validity of the cause or position.
someone who chooses to say the opposite of what another person thinks or says, simply to be an asshole.
P1: "I really like apple pie."
P2: "apple pie is disgusting, I hate it"
P3: "Geez, P2, stop being such a devil's advocate, its annoying."
P2: "I'm just stating my opinion, chill out."
This awesome movie where Al Pacino plays the Devil and owns everybody in New York City, but more importantly is taking his gangster roles in Scarface and The Godfather to a greater level of sophistication.
The Devil's Advocate is the "extra" member of a devils threesome. This is the person who is not romantically involved in the couple but is just joining in for the threesome.
Mikey, Elaine and Finn wake up together.
Finn appears to have played Devil's Advocate again.