I'm abit unclear as to how you tricked your mind into saying it while dreaming...did you use some mental reinforcement to beef up the intention of what you want from the dream over and over? I did something like that before but it wasn't verbal or sentances it was actual as in imagery intention to fly to my desginated lucid spot opposite my bedroom window and the mind was convinced enough to believe that I can really fly there and I automatically became lucid in the dream and fly to exactly where I wanted.

IMJ