Your pulse goes faster when you look at yourself in the mirror. This female body is all yours, it IS you!
You sit down and calm your mind. This is still kinda freaking weird. You look at your reflection, a redhead woman with plushy squishy thighs from which end in your widened hips. So wide, something easily fits between your legs, inside your crotch. But instead of a gigantic dick, there is just a hole.
Thinking about how you get sexual desires fulfilled without your penis, freaks you out, that the only way is to have a penis INSIDE! At least the only way which comes to your mind.