Why not.

“Awe fuck it.” You say with a laugh and strip off your clothing, plopping down on your bare ass on the cold wooden bench. Sitting there for several minutes you can't help but begin to feel very odd, especially every time you look at yourself in the mirror. Slapping your hands on your thighs you just sit there wondering what is going to happen, sorta sure it can't be good, but unable to resist the curiosity. But enough is enough, you finally decide not to sit any longer and reach down to grab your clothes, when the little door opens and the rather large man walks in, somehow seeming even larger now. “When did you get so big?” You ask, looking up at him.

“I see the ritual is working. Very good. Now all you have to do is finish it with me. Just hold the image of what kind of girl you want to be as you suck my cock.” As he finishes, he flops open his pants and out pops the largest cock you have ever seen. It is surely no bigger than 10” but somehow it seems massive, as if you were shrinking or something. “When I cum, the change will be complete.” With that he walks up and puts it right in your face, inches from your lips. You can smell the musty odor coming from it. Not foul but sorta strong, sweaty.

Staring at the long member you can't help but be surprised. Part of you knew he wanted to do this, but it wasn't real till now. You don't want to suck a cock, do you? You did sit here and put on all that sexy makeup, and you are naked, but do you really want to go through with it?