Dr. Lull: [after Quaid goes crazy at Rekall] Listen to me, he's been going on and on about Mars. He's really been there.
Bob McClane: Use your head, you dumb bitch! He's just acting out the secret agent portion of his Ego Trip.
Dr. Lull: I'm afraid that's not possible.
Bob McClane: Why not?
Dr. Lull: Because we haven't implanted it yet!