"Ha, yeah sure, I wish I had the biggest dick in the world"

Too distracted by your still ever-present morning wood, at a loss for how this stone ended up here in the night, and moreso suspicious for how much your current situation reminds you of the beginnings of some of your favorite erotic stories, you sarcastically utter the wish out loud, already dismissing it and setting it down

Not expecting anything worth waiting for you stand up from your bed to go to the bathroom. You don't even take two steps before you're struck with an intense warming and pulsing sensation in your dick, and you immediately realize what's happening.

"Oh fuck, no way..." You stop and quickly turn back to look at the stone on the nightstand on the other side of your bed, feeling your boxers tightening as your dick rapidly swells.

Unsure just how the stone might interpret "biggest dick in the world" and not interested in having one larger than the largest mammal on earth (you're no biologist but you're sure it's too big) you dive over your bed to grasp the stone. Immediately you wish the first thing you can think of: "I wish...!"