Rub My Cock and Make a Wish.
I… don’t think that’s how it works, but you should rub it with your boobs a LOT just to make sure. And it probably depends on what your wish is.
Comic Dialogue
(If you have Wii Gloves for you wee little fingers it’s also electronic Braille.)

Libby Belle: “Holy Hentai! I have the mother lode of cock!”
Harrison the Mighty: “Look, Lately I’ve had nothing but bad experiences in the sex department. Plus, my cock has certain powers…”
Libby Belle: “Your cock has powers?”
Libby Belle: “How about if I rub it with my boobs and make a wish?”