"Genie", you say, "I wish to be turned into a weretiger!"
The genie looks at you and nods, a slight smile on her face. "As you command Master." She starts to dance sinuously, her arms moving in a patterns. A flash of light and an aura around you forces you to jump in shock.
You watch your body in amazement as your body starts changing all at once. You feel fur growing everywhere, orange striped with black. Your ears move to the top of your head and become round. You squirm as you feel a tail grow from out of your butt. A short muzzle pushes out and long whiskers grow around your now upturned and pink nose. Your manhood, always a decent size thickens and grows large. It attaches to your belly in a sheath.
The transformation completes, and you stand there, a full weretiger. You run your paw-hands over your fur and shudder in pleasure.
The genie smirks and says, "You have two more wishes, Master, what shall they be?"