don't give yourself away even though both of you are thinking it best to play the game "it's part of the fun" can't be too upfront no, you can't be honest, have to perform. the word-play creates the fantasy, a world of possibilities best to keep it in the dark and let it grow in that corner until it becomes so large, you can't escape you can't let it out not yet, let it grow or else the fantasy dies and with it, your chance