First level: A player in a three player endgame, who has two stacks big enough to fight both opponents, so while they still need to play it out they have already won. “You think this is a 3 player endgame, but I have already won”
Second level: A player who thinks that the right way to play a three player endgame is to fight both opponents simultaneously with two stacks. “I am so confident I will fight both of you”
Third level: (You know the movie and understand the exact situation of the referenced quote. About to be in a gun fight, His opponent remarks that he is so drunk that he is probably seeing double and he is in fact seeing double). So for this situation we are implying that this player thinks he is in a 3 player endgame which he is ready for with two stacks, but in reality it is actually a 1v1.