Wait, what exactly is the most sensible thing to do next?

Big, huge dong, of course!

It’s the only way.

At first, you don’t know how to activate your new flesh-shaping powers. But as you concentrate, you find this nagging little buzz at the back of your head. It gets louder and louder, until it becomes clear. You look down at your pants, feeling a growing tightness. You actually see that tightness too; your new cock is flexing just to be able to fit inside your pants and boxers. The hair peeks out a bit as the bulge grows more and more. It becomes unbearable.

You quickly jot down in the notebook:

Old rule: public nudity is perfectly acceptable.

Just to be safe.

Finally, you’ve had enough. You stand up and quickly unleash a looming beast that grew inside your pants; it was more massive than you thought, practically a third leg. It was thick and veiny, with pools of blood rushing through it. It was already titanic flaccid, perhaps 13 inches long.

A small feeling inside you says you’ve overdone it a bit. However, looking around you, you see that everyone’s attention is on you. You ever hear a few girls gasp; not at your nudity, but the sheer size and scope of your monstrously enormous manhood. And you feel it starting to harden too.