Make a mental wish...a favor for Beth

The first mental wish you make while walking into the bedroom is for the sisters to not be ashamed, and actually want you to watch them. As soon as you are finished with the thought, both sister's bodies relax and Beth drops her hastily gathered clothes to the floor. Time for some interrogation. Both sisters are staring at you with slack jaws. "Beth, answer me a question? How long have you and your sister been playing naughty games like this?"

"Couple of years." Beth answers.

"And how far have you gone?" you ask quickly.

"Kissing and dancing, that's it." replies Beth.

Time to go farther, you think. Pointing at the vibrator on the floor you ask Beth "Do you like that toy? Do you use that a lot?"

"Yes, it's my favorite"

"Good you reply, time to get a little more intimate with it!" You make the mental wish and the vibrator rises off of the floor and floats towards Beth. As the toy flies towards Beth, it starts to change color and soften in shape. With a brillant flash of light the vibrator then merges with the younger sister and turns into a huge cock! Now Beth has a gigantic, purple headed cock between her legs! "Go ahead, touch it," you command.

Beth looks down between her legs with large eyes and grasps her new cock with both hands. The thing must be at least 13 inches long. It is huge. Becky is watching all of this from the bed with a foolish grin on her face. Beth slowly starts to experiment and stroke the cock. With each tug her face flushes till she starts to groan. You notice a drop of precum slowly oozing from the head of the huge cock. "How does that feel Beth?"

"Wonderful!" she answers between grunts. Now to give her a couple more experiences!